Skip to main content
  • Research article
  • Open access
  • Published:

Pattern of emergency department visits by elderly patients: study from a tertiary care hospital, Karachi



Worldwide the proportion of elderly people in the population is increasing. Currently in Pakistan 7.3 million people (5.6% of total population) are more than 60 years old. This age shift has emerged as an important health issue and is associated with an increased utilization of emergency services by the elderly. We carried out this study to assess the pattern of elderly patients (>60 years) who visit emergency departments in comparison to young adults (18–60 years).


Data was collected retrospectively of patients aged 18 years or more who visited the Emergency Department (ED) of Aga Khan University Hospital, Karachi (AKUH) during September, 2009 to September, 2011. The data collection sheet included patient’s demographic information, triage category, reason for visit, clinical presentation, ED length of stay, day and time of presentation and their disposition. Data was entered and analyzed using SPSS version 19.0. Descriptive statistics were used to describe patient’s demographics. Chi-square (χ2) test was used as a test of significance to compare differences between groups for categorical data and t-test for continuous data. Multiple logistic regression analysis was done to find out the association between the patient characteristics and outcomes (admission and expiry).


Almost 24% (n = 13014) of all adults (n = 54588) presenting to the ED were over the age of 60 years. More than 57% of elderly patients belonged to the high priority triage category compared to 35% in younger patients. Most of the elderly patients ( 27%) presented with nonspecific complaints followed by shortness of breath (13%) and fever (9%). The median length of stay (LOS) in the ED for elderly was 379 minutes (252 min in under-60 yrs patients) and they were more likely to get admitted to in-patient departments compared to younger patients (OR 1.7 95% CI 1.6-1.8). A high proportion of those admitted (20%) required intensive or special care. Mortality in elderly patients was 2.3% as compared to 0.7% in young adults. This was accompanied by a higher mortality risk in the elderly with an odds ratio of 2.3 (CI 2–2.5).


Elderly ED users differ significantly from younger adults in terms of criticality on presentation, ED LOS and final disposition.

Peer Review reports


A worldwide increase in the elderly population is an important concern as it has implications on the optimal delivery of health care especially in the emergency setting. The age shift contributes to issues such as Emergency Department (ED) overcrowding; older patients account for 12%-24% of all ED attendees worldwide [1]. Older patients tend to develop a more severe disease state and have co-morbidities leading to longer lengths of stay in the EDs, more resource utilization and higher admission rates to critical care areas [2, 3]. In a study from USA, compared to younger patients, the elderly were 4.4 times more likely to use ambulance service, 5.6 times more likely to be admitted to a hospital, and 5.5 times more likely to be admitted to ICUs [4]. Center for disease control and prevention, in 2005 reported an increase of 16% of patients aged 50–64 years in the US [3].

In Pakistan, improved social conditions and advances in public health during the last half century have contributed to a significant increase in the average lifespan [5] Life expectancy at birth has improved to 62 years in men and 64 years in women [6, 7] More people in Pakistan have promising mortality rates (over 60 years) than ever before [8, 9]. Local data had shown that currently in Pakistan, 7.3 million people (5.6% of total population) are over 60 years old [10]. In 1951, this figure changed to approximately 1.92 million and it is projected to increase to 22.07 million by 2030; hence, increasing the dependency burden rate from 1.9 in 2000 to 19.8 in 2050 [11].

A survey carried out by Pakistan Medical and Research Council (PMRC) on the health of elderly population indicated them as frequent users of health care services [12]. A study assessing health needs of geriatric patients at the Aga Khan University Hospital, Karachi (AKUH) reported that 70% of elderly had five or more health problems, 75% had one or more chronic illnesses. Around 50% of them were on three or more medications [13].


International studies clearly demonstrate the special health care needs of elderly patients utilizing emergency services [1420]. The present ED care models in Pakistan need to be modified to such an extent that we may be able to cope with the geriatric population who are tend to get sick more often along with multiple co morbidities [14]. Data on the patterns of emergency department visits; specifically in the elderly, are essential for developing an efficient health care delivery system. Our study delivers information on the basic characteristics of elderly patients presenting to local EDs for clinical management.


To study the pattern of elderly patients (>60 years) who visited the emergency department in comparison to young adults (18–60 years) at tertiary care hospital of Pakistan.



The study was conducted in the Emergency Medicine Department of the Aga Khan University Hospital (AKUH-ED) Karachi, Pakistan. AKUH is a 600 bedded, private tertiary care teaching hospital with an annual ED census of approximately 50,000 patients and a 37% admission rate. The ED has 46 patient care beds with pediatric, critical and non-critical care areas as well as an 8 bedded observation unit. It has a well-defined triage criteria using Emergency Severity Index-IV (ESI-IV) with an electronic patient’s data base system. (Figure 1) ESI IV is a five level triage system, P1 requiring immediate life -saving intervention, P2 high risk situation while P3-P5 according to the number of resource utilization.

Figure 1
figure 1

Trends of Elderly Visits in the ED from 2009–2011.

All patients more above 18 years of age who were triaged in the AKUH-ED from September, 2009 to September, 2011 were included in the study. We used the electronic ED record system to extract data on demographic and clinical characteristics of patients. Information was collected on age, sex, triage priority level, presenting complaints, vitals, work-shift of the day week and month of visit, ED length of stay and final disposition ( admitted, discharge, LAMA or expired). Moreover, for patients who were admitted, we also collected data on level of care (ward, special care or Intensive care unit).

Patients were classified as dead on arrival (DOA) if they arrived in the ED in cardiac arrest and despite resuscitative attempts as per ACLS guidelines did not recover. Transferred out patients were those who after stabilization were transferred to another facility due to non-availability of high dependency beds in the hospital, financial constraints or on patients will. Patients were labeled as return visits if they had an un-scheduled visit in the ED within 48 hours of their initial visit. Data was available on 54,588 patients from 18 years onward which was then divided in two groups for comparison: young adults (18–60 years) and elderly (>60 years).

Statistical analysis

Data of patients who were more than 18 years managed in ED was compiled and analyzed. The patients were divided into two groups: 18 to 60 years of age; and those older than 60 years old. Descriptive analysis was done and proportions were calculated for both groups. Chi-square tests for categorical variables (Triage category) and t-tests for the continuous variable (age) were applied to ascertain differences between the two groups. Multiple logistic regressions model was used to elucidate associations between patient characteristics and outcomes (admission to in-patient ward, and expiry). Two regression models were developed; one for admission to hospital and other for expiry. Initially, univariate analysis was carried out only for unadjusted odds ratios (ORs). All associations having a p-value of less than 0.25 were selected for the multivariate model. Multivariable analysis was used to calculate the adjusted ORs and the level of significance for the final models was kept at 0.05. Statistical Package for Social Sciences (SPSS) version 19 was used for the statistical analysis.

Ethical approval

The study was reviewed and given approval by the Ethical Review Committee of the Aga Khan University, Karachi, Pakistan.


General demographics

There were 86,122 visits to the AKU ED during the study period. Among them 41,574 (76.1%) belonged to the 18–60 years age group while 13,014 (23.8%) were over 60 years of age. Male to female ratio was 1.05:1 and 1.09:1 in both groups respectively with no statistically significant difference in the two groups with respect to gender. (Table 1) Our data also show an increasing trend in the number of elderly visits to the AKU-ED over time (Figure 1).

Table 1 Basic demographic characteristics of patients

Critical patients (P1 & P2) comprised a significantly higher proportion in the elderly (57%) compared to young adults (35%) (P-value < 0.001). This difference also reflected in the mortality proportions (2.3% vs. 0.7%). Elderly patients required admissions in 39.4% (5131). Almost 20% of the in-patient elderly required special or intensive care. Most patients visited during the evening clinical shift and return-visits were required in 0.5% (62) of elderly visits and 0.7% (301) in younger adults (p-value 0.002). Most of the elderly patients (27%) presented with nonspecific complaints followed by shortness of breath (13%) and fever (9%) (Figure 2).

Figure 2
figure 2

Presenting complaints of elderly patients.

Length of stay according to triage category

The median length of stay in the ED for elderly (379 minutes) was higher in all triage categories as compare to young adults (p-value < 0.001) (Table 1). The elderly had significantly higher proportions among the critical triage categories (P1 & P2) and had higher lengths of stay compared to the younger patients. The comparison of length of stay among the survived and expired elderly patients shows an inverse relationship between survival and length of stay in the ED (Table 2).

Table 2 Comparison of median Length of stay in ED (in minutes) among the expired and survived patients

We used multiple logistic regressions to ascertain which factors were associated with risk of being admitted to the hospital and dyeing. Two separate models were developed. After adjusting for other variables, the elderly were at higher risks of being admitted (OR1.7, 95% CI 1.6-1.8) and mortality (OR 2.3, 95% CI 2–2.5) as compared to the young patients. Other factors observed to have significant effects included gender, triage category and length of stay in the ED (Table 3).

Table 3 Regression models for admission and mortality of elderly (> 60 yrs) and young adults (18–60 yrs)


Our study describes the patterns of elderly patient visits in comparison to the young adults visiting the ED of a tertiary care hospital in Pakistan. In low income countries due to limited primary healthcare systems, EDs serves as the front door for critical and noncritical illness for all, especially for the elderly population. Our study shows that 23.8% of all patients visiting the ED are more than 60 years old. These old age patients constitute only 5.3% of the general population [11]. A study from Taiwan shows similar results; 24.3% of all ED visits were of elderly patients while only 8.4% of the general population was elderly [21]. Such disproportionate usage by elderly is also supported by western studies that had shown increasing proportion of aging population. [4, 15, 2123], although our study was based on a span of two years only, we still found an increasing trend in the elderly proportion of ED visits during this period.

Our study demonstrates that Elderly ED patients are of a higher acuity with 24.8% having life threatening conditions requiring resuscitative measures as compared to 13.8% in younger groups. This is comparable to the data from US showing 24.9% to 28.9% high acuity visits among the elderly in studies by Nawar, Wolinsky and others. [17, 24, 25] Elderly patients have higher rates of hospital admission and stay longer in the ED as compared to young adults which is comparable to a study from Taiwan where five in every ten elderly patients stay longer in the ED before final disposition. Reports from the US also indicate higher rates of admission (32%– 47%) in elderly compared to (7.5% -19%) in younger patients) [2, 19, 21, 23]. The median length of stay (LOS) was significantly diverse among two groups with elderly patients staying more in ED. This may be because elderly patients are sicker and have multiple comorbidities, they require additional laboratory workup and often needed to be admitted but we are unable to address it in our study. When adjusted for the risk factors of being admitted, our study shows that overall high acuity patients were more likely to be admitted. As compared to young adults, elderly patients were 1.7 times more likely to be admitted. Hospitals were never thought as safe place for older population because data had shown ten times higher adverse outcome among hospitalized elderly patients as compared to young adults [2629] while studying the Mortality model elderly patients had a higher risk of dying as compared to young adults. Overall patients with high acuity and those who are staying for more than 6 hours had an increased risk of dying. The international data had also supported the fact that the mortality in general is higher in those patients who stayed for longer duration before being shifted to ICU by 2.2 times [30]. Other temporal factors affecting mortality need to be studied further.

Interestingly 2.2% of elderly were dead on arrival in the ED and had no return of spontaneous circulation even after resuscitation according to Advance Cardiac Life Support (ACLS) protocol. This may either be due to prolonged illness; failure to recognize the signs of deterioration or because of lack of access to care .This needs to be investigated further as we could not look into this aspect due to limited data. Internationally, the outcome of Cardio Pulmonary Resuscitation (CPR) in elderly patients is reported to be as poor as only 3.8% to hospital discharge [31].

Return visits in elderly patients in this study were comparatively less than the international reported rates [3234]. A possible explanation could be that physicians have a tendency to admit elderly patients as most of them have non-specific complaints [35, 36].


Our study relied on data from the electronic information database of AKU. Complete clinical records were not available in the system. Information such as co-morbidities, final diagnosis and resource utilization (e.g., lab and radiological investigations, consultations, medications etc.) for these patients could not be ascertained in the current study design. Therefore, potential correlations of these factors with length of stay and mortality were not explored. The age range above 60 years is broad and heterogeneous in health and functional profile; there is a strong need of studies that focus at the pattern of visits and their outcomes by stratification. We assumed uniform quality of clinical care for all patients coming to the AKU-ED. The quality of care can have an effect on patient outcomes but could not be adjusted in our regression analysis due to limited availability of information.


The Elderly population has significantly different health care needs than young adults which require special attention. They are sicker, stay longer, and require more admissions in high dependency unit as compared to their younger fellows. An increasing trend of ED utilization by elderly has obvious implications for designing a system of dedicated geriatric care in ED with specific triage process addressing their special need. Further focused studies addressing the relationship of triage category with LOS and its impact on short and long term outcome are required.



Emergency department


Odd ratio


Confidence interval


Aga Khan University Hospital


Priority level 1


Priority level 2


Priority level 3


Priority level 4


Priority level 5


Advance cardiac life support


Intensive care unit


Pakistan medical & research council


Leave against medical advice


Emergency room management system


Cardio pulmonary resuscitation


Return of spontaneous circulation


Statistical package for social sciences.


  1. Salvi F, Morichi V, Grilli A, Giorgi R, De Tommaso G, Dessi-Fulgheri P: The elderly in the emergency department: a critical review of problems and solutions. Intern Emerg Med. 2007, 2: 292-301. 10.1007/s11739-007-0081-3. Online

    Article  CAS  PubMed  Google Scholar 

  2. Grief CL: Patterns of ED use and perceptions of the elderly regarding their emergency care: a synthesis of recent research. J Emerg Nurs. 2003, 29: 122-6. 10.1067/men.2003.65. Online

    Article  PubMed  Google Scholar 

  3. Roberts DC, McKay MP, Shaffer A: Increasing rates of emergency department visits for elderly patients in the United States, 1993 to 2003. Ann Emerg Med. 2008, 51: 769-74. 10.1016/j.annemergmed.2007.09.011. Online

    Article  PubMed  Google Scholar 

  4. Strange GRCE: Sanders AB use of emergency departments by elderly patients: projections from a multicenter data base. Ann Emerg Med. 1992, 21: 819-24. 10.1016/S0196-0644(05)81028-5. Online

    Article  CAS  PubMed  Google Scholar 

  5. ZA S: Changes in mortality in Pakistan 1960–88. Pak Dev Rev. 1991, 30: 669-376. Online

    Google Scholar 

  6. Lutz W, Kc S: Dimensions of global population projections: what do we know about future population trends and structures?. Phil Trans Biol Sci. 365: 2779-Online

  7. Sanderson W, Scherbov S: Rethinking age and aging: population reference bureau. 2008, Online

    Google Scholar 

  8. Knodel J, Ofstedal MB: Gender and aging in the developing world: where are the men?. Popul Dev Rev. 2003, 29: 677-98. 10.1111/j.1728-4457.2003.00677.x. Online

    Article  Google Scholar 

  9. UNO: United Nations (2002) World Population Ageing 1950–2050. 2002, New York: Department of Economic and Social Affairs, Population Division, United Nations, Online

    Google Scholar 

  10. Azhar G, Sabzwari SR: Aging in Pakistan. Ageing International. 2010, 10.1007/s12126-010-9082-z. [published Online

    Google Scholar 

  11. Jalal S, Younis MZ: Aging and Elderly in Pakistan. Ageing International. 2012, 1-9. 10.1007/s12126-012-9153-4. [published Online

    Google Scholar 

  12. Council PMR, Islamabad: Survey on the health and living conditions of the Elderly population of Pakistan. 2003–4, Online

    Google Scholar 

  13. Zafar SN, Ganatra HA, Tehseen S, Qidwai W: Health and needs assessment of geriatric patients: results of a survey at a teaching hospital in Karachi. J Pak Med Assoc. 2006, 56: 470-4. Online

    PubMed  Google Scholar 

  14. Adams JG, Gerson LW: A new model for emergency care of geriatric patients. Acad Emerg Med. 2003, 10: 271-4. 10.1111/j.1553-2712.2003.tb02002.x. Online

    Article  PubMed  Google Scholar 

  15. Baum S, Rubenstein L: Old people in the emergency room: age-related differences in emergency department use and care. J Am Geriatr Soc. 1987, 35: 398-Online

    Article  CAS  PubMed  Google Scholar 

  16. Ettinger WH, Casan JA, Coon PJ, Muller DC, Appel KP: Patterns of use of the emergency department by elderly patients. Journal of gerontology. 1987, 42: 638-10.1093/geronj/42.6.638. Online

    Article  CAS  PubMed  Google Scholar 

  17. Lowenstein SR, Crescenzi CA, Kern DC, Steel K: Care of the elderly in the emergency department. Ann Emerg Med. 1986, 15: 528-35. 10.1016/S0196-0644(86)80987-8. Online

    Article  CAS  PubMed  Google Scholar 

  18. Pitts SR, Niska RW, Xu J, Burt CW: National hospital ambulatory medical care survey: 2006 emergency department summary. Natl Health Stat Report. 2008, 7: 1-38. Online

    PubMed  Google Scholar 

  19. Samaras N, Chevalley T, Samaras D, Gold G: Older patients in the emergency department: a review. Ann Emerg Med. 2010, 56: 261-9. 10.1016/j.annemergmed.2010.04.015. Online

    Article  PubMed  Google Scholar 

  20. Singal BM, Hedges JR, Rousseau EW, et al: Geriatric patient emergency visits part I: comparison of visits by geriatric and younger patients. Ann Emerg Med. 1992, 21: 802-7. 10.1016/S0196-0644(05)81025-X. Online

    Article  CAS  PubMed  Google Scholar 

  21. Hu SC, Yen D, Yu YC, Kao WF, Wang LM: Elderly use of the ED in an Asian metropolis. Am J Emerg Med. 1999, 17: 95-9. Online

    Article  CAS  PubMed  Google Scholar 

  22. McCaig LF, Nawar EW: National hospital ambulatory medical care survey: 2004 emergency department summary. 2006, US Dept. of Health and Human Services, Centers for Disease Control and Prevention, National Center for Health Statistics

    Google Scholar 

  23. McCusker J, Karp I, Cardin S, Durand P, Morin J: Determinants of emergency department visits by older adults: a systematic review. Acad Emerg Med. 2003, 10: 1362-70. 10.1111/j.1553-2712.2003.tb00011.x. Online

    Article  PubMed  Google Scholar 

  24. Wolinsky FD, Liu L, Miller TR, et al: Emergency department utilization patterns among older adults. J Gerontol A Biol Sci Med Sci. 2008, 63: 204-10.1093/gerona/63.2.204. Online

    Article  PubMed  PubMed Central  Google Scholar 

  25. Yim VWT, Graham CA, Rainer TH: A comparison of emergency department utilization by elderly and younger adult patients presenting to three hospitals in Hong Kong. Int J Emerg Med. 2009, 2: 19-24. 10.1007/s12245-009-0087-x. Online

    Article  PubMed  PubMed Central  Google Scholar 

  26. Baker GR, Norton PG, Flintoft V, et al: The Canadian adverse events study: the incidence of adverse events among hospital patients in Canada. Can Med Assoc J. 2004, 170: 1678-10.1503/cmaj.1040498. Online

    Article  Google Scholar 

  27. Leape LL, Brennan TA, Laird N, et al: The nature of adverse events in hospitalized patients. N Engl J Med. 1991, 324: 377-84. 10.1056/NEJM199102073240605. Online

    Article  CAS  PubMed  Google Scholar 

  28. Silva TJ, Jerussalmy CS, Farfel JM, Curiati JA, Jacob-Filho W: Predictors of in-hospital mortality among older patients. Clinics. 2009, 64: 613-8. 10.1590/S1807-59322009000700002. Online

    Article  PubMed  PubMed Central  Google Scholar 

  29. Wilson RM, Harrison BT, Gibberd RW, Hamilton JD: An analysis of the causes of adverse events from the quality in Australian health care study. Med J Aust. 1999, 170: 411-5. Online

    CAS  PubMed  Google Scholar 

  30. Parkhe M, Myles PS, Leach DS, Maclean AV: Outcome of emergency department patients with delayed admission to an intensive care unit. Emerg Med. 2002, 14: 50-7. 10.1046/j.1442-2026.2002.00286.x. Online

    Article  Google Scholar 

  31. Murphy DJ, Murray AM, Robinson BE, Campion EW: Outcomes of cardiopulmonary resuscitation in the elderly. Ann Intern Med. 1989, 111: 199-205. 10.7326/0003-4819-111-3-199. Online

    Article  CAS  PubMed  Google Scholar 

  32. Benbassat JTM: Hospital readmissions as a measure of quality of health care: advantages and limitations. Arch Intern Med. 2000, 160 (8): 1074-10.1001/archinte.160.8.1074. Online

    Article  CAS  PubMed  Google Scholar 

  33. Frankl SEBJ, Goldman L: Preventability of emergent hospital readmission. Am J Med. 1991, 90 (6): 667-674. 10.1016/S0002-9343(05)80053-1. Online

    Article  CAS  PubMed  Google Scholar 

  34. McCusker JRD, Vadeboncoeur A, Verdon J: Safety of discharge of seniors from the emergency department to the community. Healthc Q. 2009, 12: 24-32. Online

    Article  PubMed  Google Scholar 

  35. Rutschmann OTCT, Zumwald C, Luthy C, Vermeulen B, Sarasin FP: Pitfalls in the emergency department triage of frail elderly patients without specific complaints. Swiss Med Wkly. 2005, 135: 9-10. Online

    Google Scholar 

  36. Vanpee D, Swine CH, Vandenbossche P, Gillet JB: Epidemiological profile of geriatric patients admitted to the emergency department of a university hospital localized in a rural area. Eur J Emerg Med. 2001, 8: 301-10.1097/00063110-200112000-00010. Online

    Article  CAS  PubMed  Google Scholar 

Pre-publication history

Download references


Asher Feroze for his help in statistics related queries and Rakshinda Mujeeb for her help in copy editing and formatting of the manuscript.

Author information

Authors and Affiliations


Corresponding author

Correspondence to Jabeen Fayyaz.

Additional information

Competing interests

The authors declare that they have no competing interests.

Authors’ contributions

JF and MK contributed equally to the work. MUM and URK participated in the design, and data analysis. JF, MK and MUM drafted the manuscript. URK also done the final reading .All authors read and approve the final manuscript.

Authors’ original submitted files for images

Below are the links to the authors’ original submitted files for images.

Authors’ original file for figure 1

Authors’ original file for figure 2

Rights and permissions

This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Reprints and permissions

About this article

Cite this article

Fayyaz, J., Khursheed, M., Mir, M.U. et al. Pattern of emergency department visits by elderly patients: study from a tertiary care hospital, Karachi. BMC Geriatr 13, 83 (2013).

Download citation

  • Received:

  • Accepted:

  • Published:

  • DOI: