- Research article
- Open Access
Effectiveness of interventions to indirectly support food and drink intake in people with dementia: Eating and Drinking Well IN dementiA (EDWINA) systematic review
BMC Geriatrics volume 16, Article number: 89 (2016)
Risks and prevalence of malnutrition and dehydration are high in older people but even higher in older people with dementia. In the EDWINA (Eating and Drinking Well IN dementiA) systematic review we aimed to assess effectiveness of interventions aiming to improve, maintain or facilitate food/drink intake indirectly, through food service or dining environment modification, education, exercise or behavioural interventions in people with cognitive impairment or dementia (across all settings, levels of care and support, types and degrees of dementia).
We comprehensively searched Medline and twelve further databases, plus bibliographies, for intervention studies with ≥3 cognitively impaired adult participants (any type/stage). The review was conducted with service user input in accordance with Cochrane Collaboration’s guidelines. We duplicated assessment of inclusion, data extraction, and validity assessment, tabulating data. Meta-analysis (statistical pooling) was not appropriate so data were tabulated and synthesised narratively.
We included 56 interventions (reported in 51 studies). Studies were small and there were no clearly effective, or clearly ineffective, interventions. Promising interventions included: eating meals with care-givers, family style meals, soothing mealtime music, constantly accessible snacks and longer mealtimes, education and support for formal and informal care-givers, spaced retrieval and Montessori activities, facilitated breakfast clubs, multisensory exercise and multicomponent interventions.
We found no definitive evidence on effectiveness, or lack of effectiveness, of specific interventions but studies were small and short term. A variety of promising indirect interventions need to be tested in large, high-quality RCTs, and may be approaches that people with dementia and their formal or informal care-givers would wish to try.
The systematic review protocol was registered (CRD42014007611) and is published, with the full MEDLINE search strategy, on Prospero (http://www.crd.york.ac.uk/PROSPERO/display_record.asp?ID=CRD42014007611).
Dementia is becoming one of the most pressing challenges for the care of older people, and the main contributor to disability and dependence. Half of older people needing personal care have dementia, rising to 80 % of those living in nursing homes . Risks for, and prevalence of, malnutrition and dehydration are high in older people but even higher in older people with dementia [2, 3].
Interventions to support older people around eating and drinking vary: changing the colour of a plate, increasing exercise, altering the environment or changing knowledge or attitudes,  and the full range of interventions may be helpful for people with dementia. Some interventions alter food/drink directly (via oral nutrition supplementation, food modification, dysphagia management, eating assistance and/or supporting the social element of eating and drinking) and some aim to affect food/drink intake or experience indirectly (altering dining environment or food service, providing education or training for people with dementia or their care-givers, behavioural interventions, exercise programs, and combinations of these, multicomponent interventions).
An international survey aiming to establish research priorities in nursing homes found both dementia care and nutrition to be crucial areas of exploration . This systematic review paper reports on indirect interventions, and its partner report assessed direct interventions . Together they provide the underpinning research evidence by systematically reviewing existing research on all interventions aiming to improve, maintain or facilitate food or drink intake (directly or indirectly) in adults with dementia of any stage and in any setting.
In this systematic review we have used Cochrane terminology. The term “systematic review” means the whole process of specifying a clear question, searching for relevant studies, assessing whether they meet inclusion criteria, data extracting those that do, assessing validity, and reporting the findings . Systematic reviews may contain statistical pooling, called meta-analysis .
We developed the systematic review protocol collaboratively, and the review team included lay stakeholders, subject experts and methodological experts. Lay stakeholders included members from AgeUK Norfolk and NorseCare (residential homes group). We also worked with two patient and public involvement groups (the Public & Patient Involvement in Research, PPIRes, from Norfolk and Suffolk and the Public Involvement in Research Group, PIRG, from the University of Hertfordshire) to develop additional specific questions for the review. The protocol is published, with the full MEDLINE search strategy, on Prospero . The review was conducted in accordance with Cochrane Collaboration’s guidelines,  and reported in accordance with PRISMA guidance . Study methods and specific questions posed by patient and public groups are reported in full (Additional file 1), and summarised below.
Criteria for inclusion
We included randomised (RCTs) and non-randomised (CCTs, with a concurrent but non-randomised control group) controlled trials and before/after (BA or pre-post) studies that fulfilled the following criteria:
Participants: ≥3 adults (to eliminate case reports which cannot be assumed to be generalisable) diagnosed with any type/stage of dementia or mild cognitive impairment (MCI) or where the mean Mini Mental State Examination (MMSE) score plus one standard deviation was ≤26, in any setting.
Duration: ≥5 consecutive days (intake at a single meal or snack or over a short period of time has little overall effect on nutritional status, so we limited to ≥5 consecutive days to suggest longer term changes and patterns which may affect nutritional status).
Intervention: aimed to indirectly alter nutrition or hydration status, food, drink or nutrient intake or increase meaningful activity by altering the dining environment or food service, providing education or training of people with dementia or their care-givers, providing a behavioural intervention, exercise, or a multicomponent intervention (>3 interventions, including at least one listed here).
Primary outcomes: nutrition or hydration status,  meaningful activity or enjoyment of food or drink (activity around food or drink that is personally fulfilling, that people enjoy, look forward to or find important), quality of life. Secondary outcomes: quantity, quality or adequacy of food or fluid intake (including ability to eat independently, and swallow without aspirating). Note - studies were only included if they collected at least one of these outcomes, but where studies were included we also extracted, and report, data provided on the following outcomes: functional or cognitive status, views or attitudes, cost effectiveness, resource use, mortality and health outcomes.
We developed a complex MEDLINE search strategy and adapted it for 12 further databases (EMBASE, CINAHL, PsychInfo, five Cochrane Databases, meta-register of controlled trials, ALOIS (Cochrane Dementia and Cognitive Improvement Group comprehensive register of dementia trials), Dissertation and Thesis abstracts, and International Alzheimer’s Disease Research Portfolio (IADRP) from inception to March 2014, without language or date limitations. Bibliographies of included studies and lists of included/excluded studies from relevant reviews were checked [11–17].
Study selection and data collection
Inclusion was assessed by two reviewers independently using an inclusion form. Data (publication details, participants, intervention, comparison, outcomes as above plus quality of life, functional or cognitive status, views or attitudes, cost effectiveness, resource use, mortality, health outcomes) and validity characteristics were extracted independently in duplicate. Methodological quality was assessed using Cochrane risk of bias tool . In addition to generic criteria, we assessed funding bias, validity of dementia diagnosis, outcome measures and baseline comparability between groups. We considered a study at low risk of bias where it was at low risk of both selection bias (was randomised and had appropriate allocation concealment) and detection bias (blinding of outcome assessment).
Studies were grouped by type of intervention then study design for tables and narrative synthesis. Type of intervention included:
Dining environment and food service which included any alteration to the physical environment in which food and/or drink was taken. This included furniture, noise levels and other sensory adjustments or any alteration to the manner in which food was served, including coloured tableware, waitress service.
Education/training which included interventions with an educational and/or awareness component for people with dementia and/or their formal or informal care-givers
Behavioural interventions were interventions that aimed to alter the behaviour of people with dementia, such as verbal prompting or relaxing music prior to a meal.
Exercise was any intervention with an exercise component.
Multicomponent interventions included ≥3 intervention components, including at least one of those above.
Random-effects meta-analysis of RCTs using Review Manager (RevMan 5.3) software was planned where studies were suitably comparable, and narrative comparison was planned for all study types and to address questions formulated by the public (Table 1).
Electronic searches identified 15,468 citations, with a further 37 from bibliographies. After de-duplication we assessed 13,863 titles and abstracts, and collected 293 full text papers for further assessment. Fifty one studies reporting on 56 interventions were included in this review (Fig. 1).
Brief characteristics and results of the included interventions are shown in Tables 2, 3, 4, 5 and 6, with fuller details in Additional file 2. Most interventions were tested in North America (29 interventions) with 16 tested in Europe, eight in Asia, two in New Zealand and one in South America. The majority of interventions were assessed in institutional settings (17 in dementia units, 15 in nursing homes or units, 11 in long-term care, two in a mixture of institutional settings, six in other institutional settings, two in day-care, two living at home in the community and one with an unclear setting).
The diagnosis of dementia was stated in 45 interventions, while in the remainder dementia or MCI was assumed from cognitive scores or setting. Dementia staging was possible in 36 interventions (four mild to moderate, two moderate, six moderate to severe, 11 severe, 12 mixed, or mild to severe, and one MCI). Thirty-one interventions reported dementia type, of which 14 were Alzheimer’s Disease (AD), 10 were AD plus other types, and seven various or mixed types of dementia.
Indirect interventions were broadly grouped into; 17 dining environment/food service interventions, 15 interventions providing education or training, 12 behavioural interventions, eight exercise-type interventions and four multicomponent interventions (Fig. 1).
Dining environment and food service
Seventeen interventions [19–33] investigated effects of changes to aspects of the dining environment or food service, and were reported in 15 studies, Table 2. Three multicomponent studies [34–36] also included an element of dining environment change, results are discussed with multicomponent studies. Three interventions were CCTs, [21, 22, 25] the remaining 14 had a pre-post design (BA, no RCTs). Interventions were assessed in over 450 participants, and intervention duration was from 5 days to 1 year. Interventions were primarily tested in North America (12 interventions), with three in Europe and two in New Zealand. All interventions took place in institutional settings (six dementia units, three nursing settings, six long-term care and two ‘other’ institutions). The variety of interventions and outcomes made meta-analysis (statistical pooling) unfeasible.
All interventions had a high risk of selection bias (none were RCTs) and were either at high or unclear risk of performance and detection biases (Additional file 2), none had a low risk of bias overall.
Two interventions assessed effects of home-like dining environment. Charras 2010  (CCT) assessed mealtimes shared with staff in 18 residents with severe dementia while Altus 2002  (BA) experimented with family style meals for five US females in a locked dementia unit. Charras reported increased weight (+5.64 kg, p < 0.024) after 3 months compared to the control group, and suggested (but did not measure) improved levels of autonomy (eating independently, helping with serving and clearing up), less wandering, longer meals, greater staff satisfaction, more and better interactions between residents as well as between residents and staff. Altus reported increased participation and communication during meals after 5 days compared to baseline but with no significance testing.
Two studies (Desai 2007 CCT, Shatenstein 2000 BA) [22, 31] compared the effect of bulk food service (cafeteria style with waitress service) to pre-plated or tray service in long term care Canadian residents with dementia, both reporting increased intakes of energy protein and carbohydrates, but no effect on weight or body mass index (BMI) over 3 or 10 weeks. Shatenstein found significantly decreased albumin status.
Three BA studies tested effects of music during mealtimes [30, 32, 33]. Thomas 2009  played ‘familiar’ music at lunchtimes on alternate weeks to 12 US AD unit residents with moderate dementia. Wong 2008  assessed ‘soothing’ mealtime music with 28 US inpatients with dementia during their period four (they introduced different interventions in each of four periods), and Ragenskog 1996  tried three types (soothing music, tunes from the 1920’s and 30’s, and pop music) over dinner for 8–10 days for 20 Swedish nursing home residents with moderate or severe dementia. Pop music (but not other sorts of music) appeared to increase food intake and music generally improved several elements of psychological wellbeing in Ragneskog,  while ‘soothing’ music improved BMI but not mid-arm circumference in Wong,  with no clear effects of ‘familiar’ music on food intake, but reports of increased social engagement, remaining longer in dining area and response to the music in Thomas.
Improved dining room lighting and/or table setting contrast was tested in five BA interventions [20, 23, 26, 27]. There was no effect on weight, energy or fluid intake in response to different lighting and noise levels in 16 residents of US dementia units with AD,  but one of two lighting and contrast interventions (in 25 US long-term care residents with dementia, but not in 13 US residents of dementia units) reported improved intake, [20, 26] though not of functional status, weight or food quality. One of two studies comparing high and low contrast coloured tableware with white (in nine US men with AD, but not in the same 9 in a later intervention) improved fluid intake, but neither increased food intake .
Wong 2008  (period 2, BA) found improved BMI (though not mid-arm circumference, with unclear effects on energy intake) after 12 weeks of using a glass-door fridge filled with snacks accessible at all times and earlier meals for those requiring more assistance or time in 40 in-patients with dementia.
Three interventions (Kenkman 2010 CCT, Perivolaris 2006 and Van Ort 1995, BA studies) [25, 28, 29] each tested the effect of a suite of dining environment changes, including offering more choice, less noise, fewer distractions, greater staff availability and a home-like environment, finding no clear effects on nutritional status, eating behaviour or enjoyment, but increased energy intake in Perivolaris  only. There were non-numeric suggestions of more leisurely and relaxed meals with less wandering in Perivolaris, and improved self-feeding behaviour in Van Ort.
One BA intervention  introduced an aquarium to the dining room of 70 US residents with severe dementia living in specialised units, reporting increased food intake after 8 weeks and suggesting weight gain (+2.2 lb, not statistically significant according to reviewers calculations).
Fifteen interventions assessed education or training [19, 29, 37–49] for people with dementia and/or their formal or informal care-givers, and were reported in 15 studies. In 12, education/training was the only intervention, in three it was one of two components [19, 39, 40], see Table 3 (one  was part of a multicomponent intervention). Six were RCTs, four CCTs and five BA including over 2100 people with dementia, with intervention durations from 5 days to 33 months. All interventions except Suominen 2013 [48, 50] were at a high or unclear risk of selection bias, all had high or unclear risk of performance bias and only Kwok 2012  was at low risk of detection bias (see Additional file 2). No interventions were at low risk of bias overall.
Nine interventions investigated training of formal care-givers (staff), [19, 29, 38–40, 42, 43, 48, 49] two informal care-givers, [37, 45] and four trained people with dementia plus their formal or informal care-givers [41, 44, 46, 48]. The nine staff education interventions (one RCT, three CCTs, five BAs) varied from 3 h of web-based training  to 38 h of dementia-specific integrity training (lectures and discussion groups) followed by 3 months intensive support . Only Mamhidir 2007  (CCT), which provided the most intensive staff training and support reported positive effects of education on nutritional status, finding improved weight (+4.6 kg, p < 0.01) after 4 months, and the suggestion of improvements in mealtime environment and routines with increased contact between patients and staff. In Faxen-Irving 2002  (CCT), where staff education was alongside oral nutritional supplements (ONS), weight gain occurred during supplementation but weight fell following withdrawal of supplement (p < 0.01) suggesting supplementation was more useful than staff education. Suominen 2007  (BA) reported no effect on weight or BMI, but increased energy and protein intakes and self-reported staff confidence in nutritional assessment and modification, in 21 residents of Finnish dementia units following 6 months intensive education for nursing and catering staff. Staff training over 4 weeks in implementation of hydration management guidelines in Mentes 2003  (BA) did not alter hydration status or fluid intake of eight US nursing home residents with dementia. The addition of staff training to family-style meals in Altus 2002  (BA) appeared to increase mealtime participation and appropriate communication by people with dementia, but no variance or p-values were reported.
Riviere 2001  (CCT) assessed effects of education (providing nine sessions on nutrition and preventing weight loss over a year) for informal caregivers of Europeans with AD. The intervention improved weight (1.4 kg, p < 0.05) compared to usual care. Hanson 2010  used decision aid training for the US surrogates of people with severe dementia and feeding problems in an RCT. After 9 months there was a significant decrease in the percentage of patients with weight loss compared to control, but knowledge, decisional conflict and certainty were only assessed for the intervention group.
Four RCTs investigated effects of education of both people with dementia and their caregivers. Kwok 2012  recruited formal care staff and residents with MCI from 14 Hong Kong hostels. Intervention participants received 1 h-long talk and 33 months of 3-weekly (later 6-weekly) support group sessions promoting “brain preservation diets” (more fruit, vegetables and fish, reduced salt), with training and support for staff, but despite the large sample (429 participants) and long duration, there was no effect on nutritional status or intake, except for a smaller fall in fish intake compared to control, with no effect on cognition. Three RCTs trained people with dementia and their informal caregivers [44, 46, 48]. NutriAlz  included over 900 people with mild to moderate dementia and their care-givers, providing 12 months nutrition education but reported no significant effect on weight, BMI, eating behaviour, caregiver burden or cognitive status, though an improvement in nutritional risk scores. Pivi 2011  with over 50 patients and 6 months nutritional education intervention provided unclear statistics suggesting no effect on BMI, weight, arm circumference, triceps skinfold or serum albumin compared to control. Suominen 2013  assessed effects of tailored nutritional training to people with AD and their spouses, preliminary results showing no effect on weight, but significantly increased protein intake and some suggestion of quality of life improvement.
Twelve behavioural interventions were assessed, [28, 51–56] in six RCTs, three CCTs and three BAs, reported in ten studies, Table 4. Studies reported on 347 people with dementia with study durations from 5 days to 6 months. All the studies were in institutional settings, six in North America and six in Asia. Risk of bias is represented in Additional file 2: ten of 12 interventions had unclear or high risk of selection bias, all had high or unclear risk of performance bias but eight of 12 had a low risk of detection bias. None were at low risk of bias overall.
Four interventions assessed mealtime staff prompting with cues, conditioning, reinforcement or gentle touch, [28, 51–53] with durations from 5 days to 2 weeks, too short to show nutritional status change (none were seen). Coyne 1988,  in a US RCT compared effects of directed verbal prompts and positive reinforcement with usual care in 24 nursing home residents with severe dementia. After 2 weeks, eating independence was significantly improved for solid foods, but not liquid foods, and eating frequency of solid and liquid foods was not altered. Eaton 1986  (RCT) evaluated encouragement of eating through gentle touch in 42 self-feeding skilled facility residents with chronic organic brain syndrome. Five days gentle touch significantly increased energy and protein intake compared to verbal encouragement alone (p < 0.05). Van Ort 1995  investigated effects of systematic prompting, cueing and behavioural guidance, delivered as a 4-week crossover RCT in seven residents with severe dementia in a secure unit of a US geriatric centre. The behavioural intervention resulted in longer mealtimes, and self-feeding increased. Weight change was not reported as resulting from either intervention. Beattie 2004  (BA) assessed a mealtime intervention (conditioning over 20 min each evening meal of reinforcement and hand pressure on shoulder and “grabbing” dominant arm and re-seating if resident left table) in three US nursing home residents with severe AD and low food intake thought due to leaving the table early. There were no significant effects on weight but proportion of food eaten increased almost significantly in two of three participants (by 22 % and 35 %, p = 0.05) without increased fluid intake.
Five Taiwanese interventions assessed spaced retrieval or Montessori based activities [55, 56]. In spaced retrieval therapy several functional targets are selected, then one target is focused on until maintenance level is achieved, when another target is added. Montessori activities are free activities within a prepared or structured environment. The results were not conclusive nor consistent, except that all appeared to improve eating ability. Lin 2011  (RCT) reported no effect of Montessori activities on BMI or mini-nutritional assessment (MNA), but improved functional and eating ability, self-feeding frequency and unaltered eating time) while Lin 2010  (RCT) reported no effects of either 8 weeks of spaced retrieval or Montessori activities on weight or BMI (but improved nutritional risk with spaced retrieval only and improved eating difficulty for both) in people with dementia and eating difficulties. Wu 2013  was not randomised (CCT) and found significant improvements in BMI and MNA (reduced nutritional risk) for fixed and individualised spaced retrieval combined with Montessori-type activities for people living in dementia units over 6 months.
McHugh 2012  (RCT) found no effect of 3 weeks pre-lunch singing and music therapy sessions (11 familiar slow to medium tempo songs) on nutritional intake or participation in eight US adults with dementia in a memory support unit, while Huang 2009  (BA) reported significantly greater feelings of happiness after 8 weekly sessions of reminiscence cooking in 12 Taiwanese nursing home residents with dementia but did not report on the nutritional status or intake.
Santo Pietro 1998  (CCT) investigated the effect of a facilitated breakfast club where US nursing home residents with mid-stage dementia prepared, ate, cleared and conversed. After 12 weeks the intervention group had higher interest and involvement scores and better procedural memory with reports of participants remembering each-others names, increased use of humour, response to non-verbal cues, singing and empathic behaviour, with reduced wandering and distractibility (unclear effects on functional and cognitive status).
We included eight exercise interventions, [60–66], reported in seven studies, Table 5, and exercise was also part of two multicomponent interventions [36, 67]. Six interventions were RCTs, [60, 62, 63, 65, 66] 2 BA, [61, 64] reporting on ~700 participants lasting from 3 weeks to 12 months. Three interventions were tested in North America, four in Europe and one in Asia, and settings included institutions (three in nursing homes, one long-term care facility (LTC) three in a mixture or other institutional settings) and daycare (one intervention). Four interventions, reported in 3 studies, were judged at low risk of selection bias (Dechamps 2010 , Rolland 2007 , FOPANU ), but all were at high or unclear risk of performance bias. Three interventions were at low risk of detection bias and six low risk of attrition bias, see Additional file 2. Two RCTs were at low risk of bias overall [60, 66].
Exercise interventions did not appear to improve nutritional status in any study, but there were indications of changes in strength and functional status in some. FOPANU  tested the effect of 3 months high intensity exercise (with or without timed protein-enriched supplement) vs. sitting activity (with or without supplement) in a 2×2 RCT on 191 functionally and cognitively impaired residents of nine Swedish residential care facilities. At 6 months, weight and intracellular water were lower in those with exercise training, while gait speed and lower limb strength were greater, mortality and balance unchanged. FICSIT  assessed the effect of 10 weeks of high intensity exercise vs placebo activities (both with or without ONS in a 2×2 RCT) in 100 mostly cognitively impaired institutionalised US elders, finding no effects on weight, thigh muscle area, body potassium, physical activity or mortality but increased energy intake, muscle strength and mobility. Dechamps 2010  (RCT) compared adapted tai-chi and cognition action (light to moderate intensity seated exercises) to usual care in 160 French nursing home residents with cognitive impairment or dementia. After 6 months, eating independence was better maintained in the two exercise intervention groups compared to control, though cognitive function did not differ. Moore 2010  assessed physical activity to familiar music compared to usual care in a US RCT in institutionalised older adults with dementia, finding increased food and drink intakes, but no effect on eating ability. Rolland 2007  (RCT) investigated the effectiveness of an exercise program, which included aerobic, strength, flexibility, and balance training, plus walking on 134 French nursing home residents with mild to severe AD, finding no effects on weight or nutritional risk, but slower decline in functional status compared to usual care.
Chang 2011  (BA) assessed effects of stretching, walking and weight bearing in 29 people with dementia in Taiwanese day care, finding a significant increase in functional status, but not eating function. Heyn 2003  (BA), assessed effects of an 8 week multisensory exercise (focussed on attention, flexibility, aerobic exercise, strength training, relaxation & breathing techniques) in 13 US residents of a memory care residence with severe AD, finding no weight effect but promising though unclear effects on engagement and mood.
Of four included multicomponent interventions [34–36, 67], reported in four studies, one was an RCT,  two CCTs [35, 36] and one BA, reporting on 295 people with dementia with durations of 11 weeks to 30 months, Table 6. All the studies were in institutional settings, two in North America and two in Europe. All multicomponent interventions were at high risk of selection and performance biases, one was at low risk of detection bias and one at low risk of attrition bias (Additional file 2). None were at low risk of bias overall.
Each intervention used different components. Beck 2010  implemented nutrition (chocolate plus homemade supplements, gratin diet for people with swallowing difficulties), exercise (individualised sessions twice weekly), and twice weekly oral hygiene for 11 weeks in an RCT, finding increased weight, BMI and protein intake with no change to energy intake, mortality, cognitive or functional status. Keller 2003  used an enhanced menu and dietetic time, increased nutritional awareness and communication (CCT) for 9 months and increased participant weight and dietetic time, without altering hospital stay duration, infections or mortality. Simmons 2001  (CCT) prompted US nursing home residents to drink and exercise, and offered them assistance with getting to the toilet and/or checked for incontinence every 2 h for 8 h/day for the first 16 weeks, rising to 10 h/day for the next 16 weeks, plus increased drinks choice for the final 7 weeks. They found no effects on serum osmolality, BUN:creatinine ratio or food and fluid intake at or between meals. Boffelli 2004  (BA) implemented an 18 month nutritional program for malnourished people with dementia that included modification of dietary composition, quality and consistency (modified on preference, swallowing ability, dental status), increased feeding time and assistance, enhanced dining environment and ONS prescribed for low intake, finding improved albumin but unchanged weight or BMI.
This review systematically assessed the effectiveness of 56 indirect interventions including: environmental, educational, behavioural, exercise and multicomponent interventions aiming to improve, maintain or facilitate oral food or fluid intake in adults with dementia of any type or stage and in any setting. While almost all included studies were set in institutions, they varied enormously in the type, intensity and duration of interventions, as well as recorded outcomes. Generally study validity was low – only 19 (34 %) of interventions were assessed in RCTs, of these, five interventions were at low risk of selection bias, none were clearly at low risk of performance bias, and 13 were at low risk of detection bias. We considered two interventions to be low risk of bias overall, [60, 66] both investigated exercise interventions. This high risk of bias alongside small numbers of included participants assessing many interventions means that no interventions can be clearly ruled in or ruled out as effective. We may be seeing exaggerated effect sizes where we see significant effects, but important and effective interventions may be underpowered (and of too short duration) to provide statistically significant effect sizes, so we may be missing important interventions. It is likely that it is not just what people eat and drink that is important for their nutritional wellbeing, engagement and quality of life, but also how and where they eat and drink, the atmosphere, physical and social support offered, the understanding of formal and informal care-givers, support for using the toilet, and levels of physical activity enjoyed – but for people with dementia any proof of this has yet to be published . However, promising interventions, which warrant early reassessment in high quality and well powered RCTs are shown in Table 7.
Research gaps include a shortage of potentially useful interventions to support drinking and healthy fluid intake, and shortages of research supporting people with dementia living in the community rather than in institutions. Fluid intake appears lower in older adults, the very group most at risk of dementia,  which may endanger renal function, endocrine and cardiovascular function and is associated with increased risks of mortality and disability [70–74]. People with dementia and their care-givers appear rarely to be involved in developing appropriate interventions – the support needs and preferences of people with dementia, their informal and formal care-givers need to inform the research and policy agendas.
Strengths of the review include a protocol registered on Prospero,  involvement of service users and stakeholders, an experienced review team, an exhaustive literature search, duplicated assessment of inclusion, duplicated data extraction, extensive assessment of study validity, and detailed tables of information on the included studies. Weaknesses of the review include our inability to statistically pool outcome data (in meta-analyses) as interventions and outcomes were not similar enough, and the small size and low validity of the included research, which mean that we are not able to label specific interventions as either effective or ineffective. However, the review does provide a list of potentially useful interventions that people with dementia and their care-givers may like to try, to deal with specific problems, and which researchers may use to prioritise future, high quality, research.
This review, along with its sister review on direct interventions,  is the first comprehensive systematic review of interventions to support eating and/or drinking in people with dementia and mild cognitive impairment. Previous systematic reviews have concentrated on nutritional interventions to maintain cognitive function, [75, 76] explored the effectiveness of mealtime interventions without addressing between-meal interventions, were not specific for people with dementia or did not include nutritional status or quality as outcomes [11–13, 17]. Other systematic reviews addressed effectiveness of various indirect interventions on people with dementia but did not assess impact on nutritional or hydration status [14–16, 77].
Malnutrition is associated with poor quality of life,  and problems with malnutrition, dehydration, poor eating and drinking are common in people with cognitive impairment, so understanding how to help continue eating and drinking well is very important in supporting health and quality of life of people with dementia. However, we found that studies were small and there were no clearly effective, or clearly ineffective, interventions. Promising interventions included: eating meals with care-givers, family style meals, soothing mealtime music, constantly accessible snacks and longer mealtimes, education and support for formal and informal care-givers, spaced retrieval and Montessori activities, facilitated breakfast clubs, multisensory exercise and multicomponent interventions. High quality research is needed to build on existing research, summarised in this review, to help understand what types of interventions are effective in supporting adults with MCI or dementia to eat and drink well, and to remain actively engaged with food and drink.
Ethics approval and consent to participate
Consent for publication
Availability of data and materials
Our data files are found in Additional file 2, and the references to each included study in the main paper.
blood urea nitrogen
non-randomised controlled trial
Eating and Drinking Well IN dementiA study
mild cognitive impairment
mini-mental state examination
oral nutrition supplements
randomised controlled trial
Alzheimer’s Disease International: World Alzheimer Report 2013: An analysis of long-term care for dementia. http://www.alz.co.uk/research/world-report-2013 Accessed 25 08 2015; 2013.
Meijers JM, Schols JM, Halfens RJ. Malnutrition in care home residents with dementia. J Nutr Health Aging. 2014;18:595–600.
Jesus P, Desport JC, Massoulard A, Villemonteix C, Baptiste A, Gindre-Poulvelarie L, et al. Nutritional assessment and follow-up of residents with and without dementia in nursing homes in the Limousin region of France: a health network initiative. J Nutr Health Aging. 2012;16:504–8.
Keller H, Beck AM, Namasivayam A. Improving food and fluid intake for older adults living in long-term care: A research agenda. J Am Med Dir Assoc. 2015;16:93–100.
Morley JE, Caplan G, Cesari M, Dong B, Flaherty JH, Grossberg GT, et al. International survey of nursing home research priorities. J Am Med Dir Assoc. 2014;15:309–12.
Abdelhamid A, Bunn DK, Copley M, Cowap V, Dickinson A, Gray L, et al. Effectiveness of interventions to directly support food and drink intake in people with dementia: systematic review and meta-analysis. BMC Geriatr. 2016;16:26. doi:10.1186/s12877-016-0196-3.
Higgins JPT, Green S. Cochrane Handbook for Systematic Reviews of Interventions Version 5.1.0 [updated March 2011]. http://handbook.cochrane.org/. 2011. The Cochrane Collaboration. 25-8-2015.
Abdelhamid A, Bunn D, Dickinson A, Killett A, Poland F, Potter J et al.: Effectiveness of interventions to improve, maintain or faciltate oral food and/or drink intake in people with dementia. PROSPERO 2014, CRD42014007611: http://www.crd.york.ac.uk/PROSPERO/display_record.asp?ID=CRD42014007611.
Moher D, Liberati A, Tetzlaff J, Altman DG, The PRISMA Group. Preferred reporting items for systematic reviews and meta-analyses: The PRISMA statement. PLoS Med. 2009;6:e1000097.
Hooper L, Abdelhamid A, Atreed NJ, Campbell WW, Chassagne P, Channell AM, et al. Clinical symptoms, signs and tests for identification of impending and current water-loss dehydration in older people. Cochrane Database Syst Rev. 2015;2015:CD009647.
Liu W, Cheon J, Thomas SA. Interventions on mealtime difficulties in older adults with dementia: a systematic review. Int J Nurs Stud. 2014;51:14–27.
Whear R, Abbott R, Thompson-Coon J, Bethel A, Rogers M, Hemsley A, et al. Effectiveness of mealtime interventions on behavior symptoms of people with dementia living in care homes: a systematic review. J Am Med Dir Assoc. 2014;15:185–93.
Whitelock G, Aromataris E. Effectiveness of mealtime interventions to improve nutritional intake of adult patients in the acute care setting: a systematic review. JBI Database of Syst Rev Implementation Rep. 2013;11:263–305.
Heyn PC, Johnson KE, Kramer AF. Endurance and strength training outcomes on cognitively impaired and cognitively intact older adults: a meta-analysis. J Nutr Health Aging. 2008;12:401–9.
Spector A, Orrell M, Goyder J. A systematic review of staff training interventions to reduce the behavioural and psychological symptoms of dementia. Ageing Res Rev. 2013;12:354–64.
Ueda T, Suzukamo Y, Sato M, Izumi SI. Effects of music therapy on behavioral and psychological symptoms of dementia: A systematic review and meta-analysis. Ageing Res Rev. 2013;12:628–41.
Bunn D, Jimoh FO, Howard Wilsher S, Hooper L. Increasing fluid intake and reducing dehydration risk in older people living in long-term care: a systematic review. J Am Med Dir Assoc. 2015;16:101–13.
Higgins JPT, Altman DG, Gotzsche PC, Juni P, Moher D, Oxman AD, et al. The Cochrane Collaboration’s tool for assessing risk of bias in randomised trials. Br Med J. 2011;343:d5928.
Altus DE, Engelman KK, Mathews RM. Using family-style meals to increase participation and communication in persons with dementia. J Gerontol Nurs. 2002;28:47–53.
Brush J, Meehan R, Calkins M. Using the environment to improve intake for people with dementia. Alzheimer’s Care Today. 2002;3:330–8.
Charras K, Fremontier M. Sharing meals with institutionalized people with dementia: a natural experiment. J Gerontol Soc Work. 2010;53:436–48.
Desai J, Winter A, Young KW, Greenwood CE. Changes in type of foodservice and dining room environment preferentially benefit institutionalized seniors with low body mass indexes. J Am Diet Assoc. 2007;107:808–14.
Dunne TE, Neargarder SA, Cipolloni PB, Cronin-Golomb A. Visual contrast enhances food and liquid intake in advanced Alzheimer’s disease. Clin Nutr. 2004;23:533–8.
Edwards NE, Beck AM. The influence of aquariums on weight in individuals with dementia. Alzheimer Dis Assoc Disord. 2013;27:379–83.
Kenkmann A, Price GM, Bolton J, Hooper L. Health, wellbeing and nutritional status of older people living in UK care homes: an exploratory evaluation of changes in food and drink provision. BMC Geriatr. 2010;10:28.
Koss E, Gilmore GC. Environmental interventions and functional ability of AD patients. In: Vellas B, editor. Research and practice in Alzheimer’s disease. New York: Serdi Springer; 1998. p. 185–99.
McDaniel JH, Hunt A, Hackes B, Pope JF. Impact of dining room environment on nutritional intake of Alzheimer’s residents: a case study. Am J Alzheimers Dis Other Demen. 2001;16:297–302.
Van Ort S, Phillips LR. Nursing interventions to promote functional feeding. J Gerontol Nurs. 1995;21:6–14.
Perivolaris A, LeClerc C, Wilkinson K, Buchanan S. An enhanced dining program for persons with dementia. Alzheimer’s Care Today. 2006;7:258–67.
Ragneskog H, Brane G, Karlsson I, Kihlgren M. Influence of dinner music on food intake and symptoms common in dementia. Scand J Caring Sci. 1996;10:11–7.
Shatenstein B, Ferland G. Absence of nutritional or clinical consequences of decentralized bulk food portioning in elderly nursing home residents with dementia in Montreal. J Am Diet Assoc. 2000;100:1354–60.
Thomas DW, Smith M. The effect of music on caloric consumption among nursing home residents with dementia of the Alzheimer’s type. Act Adapt Aging. 2009;33:1–16.
Wong A, Burford S, Wyles CL, Mundy H, Sainsbury R. Evaluation of strategies to improve nutrition in people with dementia in an assessment unit. J Nutr Health Aging. 2008;12:309–12.
Boffelli S, Rozzini R, Trabucci M. Nutritional intervention in special care units for dementia. J Am Geriatr Soc. 2004;52:1216–7.
Keller HH, Gibbs AJ, Boudreau LD, Goy RE, PattiIlo MS, Brown HM. Prevention of weight loss in dementia with comprehensive nutritional treatment. J Am Geriatr Soc. 2003;51:945–51.
Simmons SF, Alessi C, Schnelle JF. An intervention to increase fluid intake in nursing home residents: prompting and preference compliance. J Am Geriatr Soc. 2001;49:926–33.
Hanson LC, Carey TS, Caprio AJ, Lee TJ, Ersek M, Garrett J, et al. Improving decision-making for feeding options in advanced dementia: a randomized, controlled trial. J Am Geriatr Soc. 2011;59:2009–16.
Aselage MB. Feasibility of implementing a web-based dementia feeding skills training module for nursing home staff (PhD thesis). Medical University of South Carolina; 2011.
Faxen-Irving G, Andren-Olsson B, af Geijerstam A, Basun H, Cederholm T. The effect of nutritional intervention in elderly subjects residing in group-living for the demented. Eur J Clin Nutr. 2002;56:221–7.
Jean LA. “Finger food menu” restores independence in dining. Health Care Food Nutr Focus. 1997;14:4–6.
Kwok TCY, Lam LCW, Sea MMM, Goggins W, Woo J. A randomized controlled trial of dietetic interventions to prevent cognitive decline in old age hostel residents. Eur J Clin Nutr. 2012;66:1135–40.
Mamhidir AG, Karlsson I, Norberg A, Mona K. Weight increase in patients with dementia, and alteration in meal routines and meal environment after integrity promoting care. J Clin Nurs. 2007;16:987–96.
Mentes JC, Culp K. Reducing hydration-linked events in nursing home residents. Clin Nurs Res. 2003;12:210–25.
Pivi GA, da Silva RV, Juliano Y, Novo NF, Okamoto IH, Brant CQ, et al. A prospective study of nutrition education and oral nutritional supplementation in patients with Alzheimer’s disease. Nutr J. 2011;10:98.
Riviere S, Gillette-Guyonnet S, Voisin T, Reynish E, Andrieu S, Lauque S, et al. A nutritional education program could prevent weight loss and slow cognitive decline in Alzheimer’s disease. J Nutr Health Aging. 2001;5:295–9.
Salva A, Andrieu S, Fernandez E, Schiffrin EJ, Moulin J, Decarli B, et al. Health and nutrition promotion program for patients with dementia (NutriAlz): Cluster randomized trial. J Nutr Health Aging. 2011;15:822–30.
Suominen MH, Kivisto SM, Pitkala KH. The effects of nutrition education on professionals’ practice and on the nutrition of aged residents in dementia wards. Eur J Clin Nutr. 2007;61:1226–32.
Suominen MH, Puranen TM, Eloniemi-Sulkava U, Jyvakorpi SK, Siljamaki-Ojansuu U, Kautiainen H, et al. Effectiveness of a tailored nutrition intervention on nutrient intake and quality of life of aged persons with Alzheimer disease living at home with their spouses. A randomized, controlled trial. Eur Geriatr Med. 2013;4:S96.
Wikby K, Ek AC, Christensson L. Implementation of a nutritional programme in elderly people admitted to resident homes. Scand J Caring Sci. 2009;23:421–30.
Jyvakorpi SK, Puranen T, Pitkala KH, Suominen MH. Nutritional treatment of aged individuals with Alzheimer disease living at home with their spouses: study protocol for a randomized controlled trial. Trials. 2012;13:66.
Beattie ER, Algase DL, Song J. Keeping wandering nursing home residents at the table: improving food intake using a behavioral communication intervention. Aging Ment Health. 2004;8:109–16.
Coyne ML. The effect of directed verbal prompts and positive reinforcement on the level of eating independence of elderly nursing home clients with dementia (PhD thesis). The Catholic University of America; 1988.
Eaton M, Mitchell-Bonair IL, Friedmann E. The effect of touch on nutritional intake of chronic organic brain syndrome patients. J Gerontol. 1986;41:611–6.
Huang SL, Li CM, Yang CY, Chen JJ. Application of reminiscence treatment on older people with dementia: a case study in Pingtung, Taiwan. J Nurs Res. 2009;17:112–9.
Lin LC, Huang YJ, Su SG, Watson R, Tsai BW, Wu SC. Using spaced retrieval and Montessori-based activities in improving eating ability for residents with dementia. Int J Geriatr Psychiatry. 2010;25:953–9.
Lin LC, Huang YJ, Watson R, Wu SC, Lee YC. Using a Montessori method to increase eating ability for institutionalised residents with dementia: A crossover design. J Clin Nurs. 2011;20:3092–101.
Wu HS, Lin LC. The moderating effect of nutritional status on depressive symptoms in veteran elders with dementia: a spaced retrieval combined with Montessori-based activities. J Adv Nurs. 2013;69:2229–41.
McHugh L, Gardstrom S, Hiller J, Brewer M, Diestelkamp WS. The effect of pre-meal, vocal re-creative music therapy on nutritional intake of residents with Alzheimer’s disease and related dementias: A pilot study. Music Ther Perspec. 2012;30:32–42.
Santo Pietro MJ, Boczko F. The breakfast club: Results of a study examining the effectiveness of a multi-modality group communication treatment. Am J Alzheimers Dis Other Demen. 1998;13:146–58.
Carlsson M, Littbrand H, Gustafson Y, Lundin-Olsson L, Lindelof N, Rosendahl E, et al. Effects of high-intensity exercise and protein supplement on muscle mass in ADL dependent older people with and without malnutrition: a randomized controlled trial. J Nutr Health Aging. 2011;15:554–60.
Chang SH, Chen CY, Shen SH, Chiou JH. The effectiveness of an exercise programme for elders with dementia in a Taiwanese day-care centre. Int J Nurs Pract. 2011;17:213–20.
Dechamps A, Diolez P, Thiaudiere E, Tulon A, Onifade C, Vuong T, et al. Effects of exercise programs to prevent decline in health-related quality of life in highly deconditioned institutionalized elderly persons: a randomized controlled trial. Arch Intern Med. 2010;170:162–9.
Fiatarone MA, O’Neill EF, Ryan ND, Clements KM, Solares GR, Nelson ME, et al. Exercise training and nutritional supplementation for physical frailty in very elderly people. N Engl J Med. 1994;330:1769–75.
Heyn P. The effect of a multisensory exercise program on engagement, behavior, and selected physiological indexes in persons with dementia. Am J Alzheimers Dis Other Demen. 2003;18:247–51.
Moore JR. Familiar Physical Activity to Familiar Music: The Effects on Apathy, Agitation, Eating Ability, and Dietary Intake in Institutionalized Older Adults with Dementia (thesis). University of Massachusetts; 2010.
Rolland Y, Pillard F, Klapouszczak A, Reynish E, Thomas D, Andrieu S, et al. Exercise program for nursing home residents with Alzheimer’s disease: A 1-year randomized, controlled trial. J Am Geriatr Soc. 2007;55:158–65.
Beck AM, Damkjaer K, Sørbye LW. Physical and social functional abilities seem to be maintained by a multifaceted randomized controlled nutritional intervention among old (>65 years) Danish nursing home residents. Arch Gerontol Geriatr. 2010;50:351–5.
Amella EJ. Feeding and hydration issues for older adults with dementia. Nurs Clin N Am. 2004;39:607–23.
Elmadfa I, Meyer AL. Patterns of drinking and eating across the European Union: implications for hydration status. Nutr Rev. 2015;73:141–7.
Feehally J, Khosravi M. Effects of acute and chronic hypohydration on kidney health and function. Nutr Rev. 2015;73:110–9.
Hooper L, Bunn D, Jimoh FO, Fairweather-Tait SJ. Water-loss dehydration and aging. Mech Ageing Dev. 2014;136–137:50–8.
Stookey JD, Pieper CF, Cohen HJ. Is the prevalence of dehydration among community-dwelling older adults really low? Informing current debate over the fluid recommendation for adults aged 70 + years. Public Health Nutr. 2005;8:1275–85.
Stookey JD. High prevalence of plasma hypertonicity among community-dwelling older adults: results from NHANES III. J Am Diet Assoc. 2005;105:1231–9.
Helm L, Macdonald IA. Impact of beverage intake on metabolic and cardiovascular health. Nutr Rev. 2015;73:120–9.
McCaddon A, Miller JW. Assessing the association between homocysteine and cognition: reflections on Bradford Hill, meta-analyses, and causality. Nutr Rev. 2015;73:723–35. published online 18 Aug 2015.
Scholey A, Owen L. Effects of chocolate on cognitive function and mood: a systematic review. Nutr Rev. 2013;71:665–81.
Whear R, Coon JT, Bethel A, Abbott R, Stein K, Garside R. What is the impact of using outdoor spaces such as gardens on the physical and mental well-being of those with dementia? A systematic review of quantitative and qualitative evidence. J Am Med Dir Assoc. 2014;15:697–705.
Rasheed S, Woods RT. Malnutrition and quality of life in older people: a systematic review and meta-analysis. Ageing Res Rev. 2013;12:561–6.
Kenkmann A, Hooper L. The restaurant within the home: experiences of a restaurant-style dining provision in residential homes for older people. QAOA. 2012;13:98–110.
Ragneskog H, Kihlgren M, Karlsson I, Norberg A. Dinner music for demented patients: analysis of video-recorded observations. Clin Nurs Res. 1996;5:262–77.
Hanson LC, Caprio AJ, Ersek M, Lee T, Garrett J, Mitchell SL. Testing a decision aid for feeding options in advanced dementia [abstract]. J Am Geriatr Soc. 2010;57(2010 Annual Scientific Meeting of the American Geriatrics Society, Orlando FL, USA):S90.
Hanson LC, Carey TS, Caprio AJ, Lee T, Ersek M, Garrett J. Randomized trial of a decision aid for feeding options in advanced dementia [abstract]. J Am Geriatr Soc. 2011;58(Annual Scientific Meeting of the American Geriatrics Society National Harbor, MD United States):S1.
Snyder EA, Caprio AJ, Wessell K, Lin FC, Hanson LC. Impact of a decision aid on surrogate decision-makers’ perceptions of feeding options for patients with dementia. J Am Med Dir Assoc. 2013;14:114–8.
Hanson LC, Ersek M, Lin FC, Carey TS. Outcomes of feeding problems in advanced dementia in a nursing home population. J Am Geriatr Soc. 2013;61:1692–7.
Mentes JC. Hydration management: a long-term care nursing intervention to prevent acute confusion and other hydration-linked events (PhD thesis). University of Iowa; 2000.
Salva A, Andrieu S, Fernandez E, Schiffrin EJ, Moulin J, Decarli B, et al. Health and nutritional promotion program for patients with dementia (NutriAlz Study): design and baseline data. J Nutr Health Aging. 2009;13:529–37.
Salva A, Roque M, Rojano X, Inzitari M, Andrieu S, Schiffrin EJ, et al. Falls and risk factors for falls in community-dwelling adults with dementia (NutriAlz Trial). Alzheimer Dis Assoc Disord. 2012;26:74–80.
Roque M, Salva A, Vellas B. Malnutrition in community-dwelling adults with dementia (NutriAlz Trial). J Nutr Health Aging. 2013;17:295–9.
Salva A: Nutritional programme for dementia elderly patient (NCT00479843). ClinicalTrials gov 2007, http://clinicaltrials.gov/ct2/show/NCT00479843.
Suominen M: Nutritional treatment of aged individuals with Alzheimer’s disease living at home with their spouses - randomized controlled intervention trial (ACTRN12611000018910). Australia New Zealand Clinical Trials Registry 2010, https://www.anzctr.org.au/Trial/Registration/TrialReview.aspx?ACTRN=12611000018910.
Ory MG, Schechtman KB, Miller JP, Hadley EC, Fiatarone MA, Province MA, et al. Frailty and injuries in later life: the FICSIT trials. J Am Geriatr Soc. 1993;41:283–96.
Fiatarone MA, O’Neill EF, Doyle N, Clements KM, Roberts SB, Kehayias JJ, et al. The Boston FICSIT Study: The effects of resistance training and nutritional supplementation on physical frailty in the oldest old. J Am Geriatr Soc. 1993;41:333–7.
Fiatarone Singh MA, Bernstein MA, Ryan AD, O’Neill EF, Clements KM, Evans WJ. The effect of oral nutritional supplements on habitual dietary quality and quantity in frail elders. J Nutr Health Aging. 2000;4:5–12.
Littbrand H, Carlsson M, Lundin-Olsson L, Lindelof N, Haglin L, Gustafson Y, et al. Effect of a high-intensity functional exercise program on functional balance: Preplanned subgroup analyses of a randomized controlled trial in residential care facilities. J Am Geriatr Soc. 2011;59:1274–82.
Rosendahl E, Lindelöf N, Littbrand H, Yifter-Lindgren E, Lundin-Olsson L, Håglin L, et al. High-intensity functional exercise program and protein-enriched energy supplement for older persons dependent in activities of daily living: a randomised controlled trial. Aust J Physiother. 2006;52:105–13.
Beck AM, Damkjaer K, Beyer N. Multifaceted nutritional intervention among nursing-home residents has a positive influence on nutrition and function. Nutrition. 2008;24:1073–80.
Keller HH, Gibbs-Ward A, Randall-Simpson J, Bocock MA, Dimou E. Meal rounds: an essential aspect of quality nutrition services in long-term care. J Am Med Dir Assoc. 2006;7:40–5.
Schnelle JF, Alessi C, Simmons SF, al-Samarrai N, Beck JC, Ouslander JG. Translating clinical research into practice: a randomized controlled trial of exercise and continence care with nursing home residents. J Am Geriatr Soc. 2002;50:1476–83.
We are grateful to all the members of the public, patients and our stakeholders who contributed questions, thoughts and ideas to the systematic review protocol. We are also grateful to authors Dr Mary Coyne and Dr Patricia Heyn for providing further data/publications on their studies. Finally, thank you to our funders, and to Lucy Gray, Jin Lee and Francesca Li who took part in data extraction and assessment of validity.
This article summarises independent research funded in part by the National Institute for Health Research (NIHR), Collaboration for Leadership in Applied Health Research & Care, East of England (CLAHRC EoE), and in part by the National Institute of Health Research Fellowship programme (NIHR-CDF-2011-04-025). The views expressed are those of the authors and not necessarily those of the NHS, the NIHR or the Department of Health. The funders had no part in the collection, analysis or interpretation of data; in the writing of the report; and in the decision to submit the article for publication.
No authors declare a conflict of interest, except that one of the review authors is an author of one of the included studies in this systematic review. This study was assessed for inclusion, data extracted and assessed for validity by other reviewers, without reference to the paper’s author.
The review idea was conceived by LH, FP and CF. AA managed the review. AA and LH drafted the protocol with expert and stakeholder input from DKB, MC, VC, AD, AH, AK, JFP, KR, DS and CF. AA and LH designed the searches and AA ran the searches. AA and LH screened studies for inclusion/exclusion. AA extracted data and assessed study quality. DKB, AD, CF, AK, KR, and LH duplicated the data extraction and quality assessment. DKB, AA and LH conducted the analysis and drafted the review. All authors commented on and approved the final draft.
The review team included Lee Hooper (University of East Anglia, UEA), Chris Fox (Norfolk and Suffolk NHS Foundation Trust, and UEA), Diane K Bunn (UEA), Asmaa Abdelhamid (UEA), Maddie Copley (Age UK Norfolk), Vicky Cowap (NorseCare), Angela Dickinson (University of Hertfordshire), Amanda Howe (UEA), Anne Killett (UEA), Fiona Poland (UEA), John F Potter (Norfolk and Norwich University Hospital NHS Trust, NNUH)), Kate Richardson (NNUH) and David Smithard (King’s College Hospital NHS Foundation Trust). The team included expertise in systematic review methodology (LH, AA, DKB), dementia and cognitive impairment (CF, MC), care home provision (VC), research with older people (LH, DKB, CF, AD, AK, FP, JFP), understanding the needs of older people (MC, VC, AK, AD), working with patient and public groups in a research context (AD, AK, FP, LH, DKB), hospital medicine (CF, JFP, KR, DS), primary care (AH, CF, AA), swallowing problems (KR, DS), occupational therapy (AK), nutrition and dietetics (LH), and hydration (DKB, LH), as well as lay stakeholders (MC, VC). The team also worked with two patient and public involvement in research groups to develop further specific questions for the review to address.
Additional file 1:
Full systematic review methodology for EDWINA (Eating and Drinking Well IN dementiA) systematic review. (DOCX 30 kb)
Additional file 2:
Tables of characteristics of included studies and risk of bias summaries. (DOCX 216 kb)
Rights and permissions
Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.
About this article
Cite this article
Bunn, D.K., Abdelhamid, A., Copley, M. et al. Effectiveness of interventions to indirectly support food and drink intake in people with dementia: Eating and Drinking Well IN dementiA (EDWINA) systematic review. BMC Geriatr 16, 89 (2016). https://doi.org/10.1186/s12877-016-0256-8