Table 1 Outcomes, assessment methods and schedule

Primary outcome

Duration of living at home (days) during 24 months

1–730

Register information

x

 Functional capacity

Instrumental Activities of Daily Living (IADL) [54]

8-31

Interview based on a structured questionnaire

x

x

x

x

Functional Independence Measure (FIM) [55]

18–126

Interview based on a structured questionnaire

x

x

x

x

Short Physical Performance Battery (SPPB) [28, 56]

0–12

Measurement

x

x

x

x

Grip strength (Saehan dynamometer, model Sh5001, South Korea) [57]

Measurement

x

x

x

x

 Frailty status

Fried et al.’s frailty criteria (modified) [1]

0–5

Interview based on a structured questionnaire and measurement

x

x

 Quality-of-life

Health-related quality-of-life (HRQoL) (15D©) [58, 59]

15–75

Self-reported questionnaire

x

x

x

x

 Falls

Number of falls

Interview based on a structured questionnaire

x

x

x

x

 Service use and costs

Use and costs of social and health care services, and medication

Register data (0–12 months and 13–24 months) from EHR and Social Insurance Institution

x

x

 Mortality

Mortality

Register data from EHR

x

 Cognition

Mini-Mental State Examination (MMSE) [26]

0–30

Interview based on a structured questionnaire

x

x

x

 Depressive symptoms

Geriatric Depression Scale (GDS-15) [60]

0–15

Interview based on a structured questionnaire

x

x

x

x

 Nutritional status

Mini Nutritional Assessment (MNA) [38]

0–30

Interview based on a structured questionnaire

x

x

x

x

 Fear of falling

Falls Efficacy Scale International (FES-I) [61, 62]

16–64

Interview based on a structured questionnaire

x

x

x

x

 Social support

Social Provision Scale (SPS) [63]

24–96

Self-reported questionnaire

x

x

x

 Health status

Weight (Omron HN289, Japan)

Measurement

x

x

x

x

Height (KaWe PERSON-CHECK, Germany)

Measurement

x

x

x

x

BMI

Calculated from weight and height

x

x

x

x

Diseases diagnosed by a physician

Interview based on a structured questionnaire and EHR

x

x

Medication

Interview based on a structured questionnaire and EHR

x

x

x

x

Pain (Visual Analogue Scale, VAS) [64]

0–100

Interview based on a structured questionnaire

x

x

x

x

Medical and mobility aids

Interview based on a structured questionnaire and EHR

x

x

x

x

Perceived health [27]

Interview based on a structured questionnaire

x

x

x

x

Perceived mobility and physical fitness [27]

Interview based on a structured questionnaire

x

x

x

x

Hip fracture surgery (details of operation, inpatient rehabilitation)

EHR

x

 Home services

Home care and home health care

Interview based on a structured questionnaire and EHR

x

x

x

x

Home renovations

Interview based on a structured questionnaire and EHR

x

x

x

x

 Lifestyle

Physical activity [27]

Interview based on a structured questionnaire

x

x

x

x

Alcohol consumption (AUDIT-C) [65]

0–12

Interview based on a structured questionnaire

x

x

x

x

Smoking [27]

Interview based on a structured questionnaire

x

x

x

x

 Background information

Demographic factors (age, marital, status, education, previous occupation)

Interview based on a structured questionnaire

x

Type of dwelling and household

Interview based on a structured questionnaire

x

x

x

x