A population-based cohort study of ambulatory care service utilization among older adults

Does socio-economic status influence the effect of multimorbidity on the frequent use of ambulatory care services in a universal healthcare system? A population-based cohort study

BACKGROUND

Frequent healthcare users place a significant burden on health systems. Factors such as multimorbidity and low socioeconomic status have been associated with high use of ambulatory care services (emergency rooms, general practitioners and specialist physicians). However, the combined effect of these two factors remains poorly understood. Our goal was to determine whether the risk of being a frequent user of ambulatory care is influenced by an interaction between multimorbidity and socioeconomic status, in an entire population covered by a universal health system.

METHODS

Using a linkage of administrative databases, we conducted a population-based cohort study of all adults in Quebec, Canada. Multimorbidity (defined as the number of different diseases) was assessed over a two-year period from April 1st 2012 to March 31st 2014 and socioeconomic status was estimated using a validated material deprivation index. Frequents users for a particular category of ambulatory services had a number of visits among the highest 5% in the total population during the 2014-15 fiscal year. We used ajusted logistic regressions to model the association between frequent use of health services and multimorbidity, depending on socioeconomic status.

RESULTS

Frequent users (5.1% of the population) were responsible for 25.2% of all ambulatory care visits. The lower the socioeconomic status, the higher the burden of chronic diseases, and the more frequent the visits to emergency departments and general practitioners. Socioeconomic status modified the association between multimorbidity and frequent visits to specialist physicians: those with low socioeconomic status visited specialist physicians less often. The difference in adjusted proportions of frequent use between the most deprived and the least deprived individuals varied from 0.1% for those without any chronic disease to 5.1% for those with four or more chronic diseases. No such differences in proportions were observed for frequent visits to an emergency room or frequent visits to a general practitioner.

CONCLUSION

Even in a universal healthcare system, the gap between socioeconomic groups widens as a function of multimorbidity with regard to visits to the specialist physicians. Further studies are needed to better understand the differential use of specialized care by the most deprived individuals.

Health literacy and age-related health-care utilisation: a multi-dimensional approach

Inefficient health service utilisation puts pressure on health systems and may cause such negative individual consequences as over-medicalisation or exacerbation of health problems. While previous research has considered the key relevance of health literacy (HL) for efficient use of health services, the results of that research have been somewhat inconclusive. Possible reasons for diverging results of prior research may be grounded in different measurement concepts of HL and the disregarding of age-specific effects. This paper analyses the association between individuals’ HL typology based on a two-dimensional concept and indicators of health service utilisation measured by registered data covering the number of doctor visits and medication costs. Our results confirm a significant interaction effect between age and HL typology. The age-related increase in health service utilisation is strongest for individuals with the combination of high subjective HL but low health-related knowledge, while the smallest increase is for individuals with the constellation of high subjective HL combined with high health-related knowledge. Individuals with specific constellations of HL (that is, individuals with high subjective HL but low health-related knowledge) are associated with reduced service utilisation in younger ages but higher service utilisation in later stages of life, compared to other groups. These results are likely to be attributed to a higher external health-related locus of control and more traditional paternalistic role expectations in such groups.

The primary care and other health system use of home care patients: a retrospective cohort analysis

BACKGROUND

Robust and integrated primary care and home care are core components of effective chronic disease management in the community. We described the primary care and other health system use by a cohort of home care patients.

METHODS

We conducted a population-based retrospective cohort study of patients who received publicly funded home care in Ontario, Canada, from October 2014 to September 2016. Primary outcomes were primary care physician visits including coordination with home care, home visits and visits after hours or on weekends or holidays within 6 months of a home care assessment. Secondary outcomes included specialist physician visits, emergency department use, home care visits and placement in a long-term care home. Multivariable models examined associations between patient characteristics and subsequent primary care use.

RESULTS

There were 226 054 home care patients in our cohort, with a median age of 81 years. Following assessment, home care patients visited primary care physicians at a rate of 0.78 visits per month. Physician-based home care coordination codes were billed for 3.9% of patients. Primary care home visits were received by 13.1% of patients, and 15.1% of patients used primary care after hours or on weekends or holidays.

INTERPRETATION

Patients receiving publicly funded home care frequently visited a primary care physician. Physician billings for coordination between primary care and home care were infrequent but were more common in interprofessional primary care practices. Physician home visits were more likely to be received by the oldest and most functionally impaired patients, suggesting that home visits are responsive to the needs of home care patients.

The Long-Term Impact of Functional Disability on Hospitalization Spending in Singapore

Singapore is one of the fastest-aging populations due to increased life expectancy and lowered fertility. Lifestyle changes increase the burden of chronic diseases and disability. These have important implications for social protection systems. The goal of this paper is to model future functional disability and healthcare expenditures based on current trends. To project the health, disability and hospitalization spending of future elders, we adapted the Future Elderly Model (FEM) to Singapore. The FEM is a dynamic Markov microsimulation model developed in the US. Our main source of population data was the Singapore Chinese Health Study (SCHS) consisting of 63,000 respondents followed up over three waves from 1993 to 2010. The FEM model enables us to investigate the effects of disability compounded over the lifecycle and hospitalization spending, while adjusting for competing risk of multi-comorbidities. Results indicate that by 2050, 1 in 6 elders in Singapore will have at least one ADL disability and 1 in 3 elders will have at least one IADL disability, an increase from 1 in 12 elders and 1 in 5 elders respectively in 2014. The highest prevalence of functional disability will be in those aged 85 years and above. Lifetime hospitalization spending of elders aged 55 and above is US$24,400 (30.2%) higher among people with functional disability compared to those without disability. Policies that successfully tackle diabetes and promote healthy living may reduce or delay the onset of disability, leading to potential saving. In addition, further technological improvements may reduce the financial burden of disability.

Longitudinal Analysis of Outpatient Physician Visits in the Oldest Old: Results of the AgeQualiDe Prospective Cohort Study

OBJECTIVES

The aim of this study was to identify determinants of outpatient health care utilization among the oldest old in Germany longitudinally.

DESIGN

Multicenter prospective cohort "Study on Needs, health service use, costs and health-related quality of life in a large sample of oldest-old primary care patients (85+)" (AgeQualiDe).

SETTING

Individuals in very old age were recruited via GP offices at six study centers in Germany. The course of outpatient health care was observed over 10 months (two waves).

PARTICIPANTS

Primary care patients aged 85 years and over (at baseline: n=861, with mean age of 89.0 years±2.9 years; 85-100 years).

MEASUREMENTS

Self-reported numbers of outpatient visits to general practitioners (GP) and specialists in the past three months were used as dependent variables. Widely used scales were used to quantify explanatory variables (e.g., Geriatric Depression Scale, Instrumental Activities of Daily Living Scale, or Global Deterioration Scale).

RESULTS

Fixed effects regressions showed that increases in GP visits were associated with increases in cognitive impairment, whereas they were not associated with changes in marital status, functional decline, increasing number of chronic conditions, increasing age, and changes in social network. Increases in specialist visits were not associated with changes in the explanatory variables.

CONCLUSION

Our findings underline the importance of cognitive impairment for GP visits. Creating strategies to postpone cognitive decline might be beneficial for the health care system.

Lifelong Health and Health Services Use: A New Focus for Gerontological Nursing Research and Practice

It is commonly believed that older adults are often ill and therefore high users of health services. A pilot study involving adults 60 and older living in the Canadian province of Alberta was conducted to (a) raise interest in the concepts of lifelong health and health services use; (b) develop a lifelong health data collection tool; (c) obtain information about lifelong and recent health services use, and self-perceived lifelong and current health; and (d) reveal links (if any) between perceived health and lifelong health services use. A questionnaire was developed, pilot tested, and posted for completion by 100 volunteers. Most older adults reported good or very good current and lifelong health. Comorbidities and low finances were associated with higher health services use. These findings suggest community-dwelling older adults may be healthy currently and throughout their lives. Gerontological nursing research, practice, and advocacy are needed because myths about aging must be addressed to refocus attention on the importance of lifelong health promotion for older adults. [Journal of Gerontological Nursing, 43(2), 28-32.].

Somatic healthcare utilisation patterns among older people with intellectual disability: an 11-year register study

Background

People with intellectual disabilities (ID) are known to have more diseases and are believed to start aging earlier than the general population. The population of older people with ID is growing, but knowledge about their use of healthcare is limited. This study aimed to explore somatic healthcare utilisation patterns among people with ID living in Sweden, in comparison with the general population from 2002 to 2012.

Methods

Participants were a group of people with ID (n = 7936) aged 55 years and older in 2012, and an equal-sized, birth year and sex matched, general population sample (n = 7936). Participants were divided into age groups of 5-year intervals. Data regarding in- and outpatient care were collected from the Swedish National Patient Register.

Results

In the younger age groups, the ID group had higher healthcare utilisation compared with the general population sample, with higher risks for planned and unplanned somatic in- and outpatient care, particularly for unplanned inpatient registrations. Decreasing patterns were seen with age; with lower risks in the ID group for the oldest age groups. This was most evident in planned somatic in- and outpatient care. In those with at least one registration, the ID group had a longer unplanned length of stay in the younger age groups, but fewer planned visits to physicians in somatic outpatient care compared with the control group.

Conclusions

Compared with the general population, people with ID show higher healthcare utilisation in younger age groups. Healthcare utilisation decreases with age, and in old age, fewer people with ID use healthcare compared with the general population. The barriers to accessing planned healthcare for older people with ID need more investigation.

Electronic supplementary material

The online version of this article (doi:10.1186/s12913-016-1880-x) contains supplementary material, which is available to authorized users.

Overutilization of ambulatory medical care in the elderly German population?--An empirical study based on national insurance claims data and a review of foreign studies

BACKGROUND

By definition, high utilizers receive a large proportion of medical services and produce relatively high costs. The authors report the results of a study on the utilization of ambulatory medical care by the elderly population in Germany in comparison to other OECD countries. Evidence points to an excessive utilization in Germany. It is important to document these utilization figures and compare them to those in other countries since the healthcare system in Germany stopped recording ambulatory healthcare utilization figures in 2008.

METHODS

The study is based on the claims data of all insurants aged ≥ 65 of a statutory health insurance company in Germany (n = 123,224). Utilization was analyzed by the number of contacts with physicians in ambulatory medical care and by the number of different practices contacted over one year. Criteria for frequent attendance were ≥ 50 contacts with practices or contacts with ≥ 10 different practices or ≥ 3 practices of the same discipline per year. Descriptive statistical analysis and logistic regression were applied. Morbidity was analyzed by prevalence and relative risk for frequent attendance for 46 chronic diseases.

RESULTS

Nineteen percent of the elderly were identified as high utilizers, corresponding to approximately 3.5 million elderly people in Germany. Two main types were identified. One type has many contacts with practices, belongs to the oldest age group, suffers from severe somatic diseases and multimorbidity, and/or is dependent on long-term care. The other type contacts large numbers of practices, consists of younger elderly who often suffer from psychiatric and/or psychosomatic complaints, and is less frequently multimorbid and/or nursing care dependent.

CONCLUSION

We found a very high rate of frequent attendance among the German elderly, which is unique among the OECD countries. Further research should clarify its reasons and if this degree of utilization is beneficial for elderly people.

Projection of young-old and old-old with functional disability: does accounting for the changing educational composition of the elderly population make a difference?

This study compares projections, up to year 2040, of young-old (aged 60-79) and old-old (aged 80+) with functional disability in Singapore with and without accounting for the changing educational composition of the Singaporean elderly. Two multi-state population models, with and without accounting for educational composition respectively, were developed, parameterized with age-gender-(education)-specific transition probabilities (between active, functional disability and death states) estimated from two waves (2009 and 2011) of a nationally representative survey of community-dwelling Singaporeans aged ≥60 years (N=4,990). Probabilistic sensitivity analysis with the bootstrap method was used to obtain the 95% confidence interval of the transition probabilities. Not accounting for educational composition overestimated the young-old with functional disability by 65 percent and underestimated the old-old by 20 percent in 2040. Accounting for educational composition, the proportion of old-old with functional disability increased from 40.8 percent in 2000 to 64.4 percent by 2040; not accounting for educational composition, the proportion in 2040 was 49.4 percent. Since the health profiles, and hence care needs, of the old-old differ from those of the young-old, health care service utilization and expenditure and the demand for formal and informal caregiving will be affected, impacting health and long-term care policy.

Is socioeconomic status associated with utilization of health care services in a single-payer universal health care system?

Objectives

To assess an association of Socio-economic status with utilization of health care services between years 2002 and 2008 in Israel.

Methods

We retrospectively analyzed the utilization of health care services in a cohort of 100,000 members, 21 years and older, of a Clalit Health Services. The research compared utilization according to the neighborhood SES status; and clinic’s location as another SES proxy. Data included: Charlson Score morbidity factor, utilization of health care services (visits to primary physicians and specialists, purchase of pharmaceuticals, number of hospitalization days, visits to ED, utilization of laboratory tests and imaging). The analysis was performed using Generalized Linear Model (GLM) technique.

Results

People with lower SES visited more the ED and primary physicians and were hospitalized for longer periods. People with higher SES visited more specialists, bought more prescription drugs and used more medical imaging. The associations between SES and most of the services we analyzed did not change between 2002 and 2008. However, the gap between lower and higher SES levels in ED visits and the use of prescription drugs slightly increased over time, while the gap in visits to specialists decreased.

Conclusions

The research shows that even in a universal health care system SES is associated with utilization of health care services. In order to improve equity in utilization of services the Israeli public health should reduce economic barriers and in parallel invest in making information accessible to improve “navigation skills” for all.

Women's strategies to achieve access to healthcare in Ontario, Canada: a meta-synthesis

As part of a mixed methods study on women's access to the healthcare system in Ontario, Canada, we undertook a qualitative meta-synthesis to better understand the contextual conditions under which women access healthcare. An earlier phase of the synthesis demonstrated a series of factors that complicate women's access to healthcare in Ontario. Here, we consider women's agency in responding to these factors. We used meta-study methods to synthesise findings from qualitative studies published between January 2002 and December 2010. Studies were identified by searches of numerous databases, including CINAHL, MEDLINE, Scopus, Gender Studies Database and LGBT Life. Inclusion criteria included use of a qualitative research design; published in a peer-reviewed journal during the specified time period; included a sample at least partially recruited in Ontario; included distinct findings for women participants; and in English language. Studies were included in the final sample after appraisals using a qualitative research appraisal tool. We found that women utilised a spectrum of responses to forces limiting access to healthcare: mobilising financial, social and interpersonal resources; living out shortfalls by making do, doing without, and emotional self-management; and avoiding illness and maintaining health. Across the studies, women described their efforts to overcome challenges to accessing healthcare. However, there were evident limits to women's agency and many of their strategies represented temporary measures rather than viable long-term solutions. While women can be resourceful and resilient in overcoming access disparities, systemic problems still need to be addressed. Women need to be involved in designing and implementing interventions to improve access to healthcare, and to address the root problems of these issues.

[Size and type of frequent use of ambulatory medical care among the elderly population in Germany: a study based on statutory health insurance data]

BACKGROUND

The authors report the results of a study on frequent attenders in ambulatory medical care among elderly people in Germany and on the factors related to frequent attendance such as age, sex, multi-morbidity and long-term care dependency.

METHODS

The study was based on claims data of all policy holders aged 65 and over of a statutory health insurance company operating nationwide in Germany in 2004 (n=123,224). Utilisation was analysed by the number of contacts with practices of physicians working in the ambulatory medical care sector and by the number of different practices contacted. The criteria for frequent attendance included greater than or equal to 50 contacts and/or greater than or equal to 10 different practices contacted and/or greater than or equal to 3 practices of the same discipline contacted within one year. Descriptive statistical analysis and logistic regression were used.

RESULTS

19% of the elderly were identified as frequent attenders, which corresponds to some 3.5 million people in Germany. Two main types of frequent attendance were identified: one is characterised by very many contacts, old age, frequent presence of multi-morbidity, and/or long-term care dependency. The other type is the younger, less frequently multi-morbid attender who is considerably less often dependent on long-term care, and characterised by large numbers of contacted practices and/or practices of the same discipline.

CONCLUSION

Frequent attendance is due to several factors. The problem of frequent attendance needs further research that is not exclusively based on claims data. We found a high rate of frequent attendance. Further research should clarify if this is to the benefit of elderly people.

Population-based cohort analyses of the bidirectional relationship between type 2 diabetes and depression

OBJECTIVE

This study addresses the strength of association for the bidirectional relationship between type 2 diabetes and depression.

RESEARCH DESIGN AND METHODS

We used two cohort studies with the same source of database to determine the link between depression and type 2 diabetes. The data analyzed included a random sample of 1 million beneficiaries selected from the National Health Insurance claims in 2000. The analysis of diabetes predicting the depression onset consisted of 16,957 diabetic patients and the same number of sex- and age-matched nondiabetic control subjects. The analysis of depression predicting diabetes onset included 5,847 depressive patients and 5,847 sex- and age-matched nondepressive control subjects. The follow-up period was between 2000 and 2006, and onset of end points was identified from ambulatory care claims. The Cox proportional hazards regression model adjusted for potential confounders was used to estimate relative hazards.

RESULTS

The first cohort analysis noted an incidence density (ID) of 7.03 per 1,000 person-years (PY) and 5.04 per 1,000 PY for depression in diabetic and nondiabetic subjects, respectively, representing a covariate-adjusted hazard ratio (HR) of 1.43 (95% CI 1.16-1.77). The second cohort analysis noted an ID of 27.59 per 1,000 PY and 9.22 per 1,000 PY for diabetes in depressive and nondepressive subjects, respectively. The covariate-adjusted HR was stronger at 2.02 (1.80-2.27) for incident diabetes associated with baseline depression.

CONCLUSIONS

The two cohort studies provided evidence for the bidirectional relationship between diabetes and depression, with a stronger association noted for the depression predicting onset of diabetes.

Person-centeredness in home- and community-based long-term care: current challenges and new directions

Person-centered care (PCC) has demonstrated to be a viable and preferred model of providing health and institutionalized long-term care services. However, the concept of PCC has not been fully extended to home- and community-based long-term care services (HCBS) for older adults with chronic conditions. This review highlights the need for PCC in HCBS and suggests that social workers may play a role in overcoming cultural and structural barriers to extending PCC to HCBS that include: the fragmentation of the industry, financial structures, regulation of services, and paternalism in policy and practice. Recommendations for practice, policy, and research are provided.

Comparison of outpatient services between elderly people with intellectual disabilities and the general elderly population in Taiwan

This study aims to analyze the ambulatory visit frequency and medical expenditures of the general elderly population versus the elderly with intellectual disabilities in Taiwan, while examining the effects of age, gender, urbanization and copayment status on ambulatory utilization. A cross-sectional study was conducted to analyze data from 103,183 national health insurance claimants aged 65 or older. A total of 1469 had a principal diagnosis of mental retardation (intellectual disability) and claimed medical outpatient services in 2007. The average number of ambulatory visits was 30.1 ± 23.1, which is much higher than in the United States and other developed countries, and the mean annual visits of the elderly with intellectual disabilities was significantly higher than the general population in Taiwan (35.2 ± 28.7 vs. 30.0 ± 23.1). Age and copayment status affected outpatient visit frequency. The mean medical expenditure per visit and the mean annual outpatient cost were 1146.5 ± 4497.7 NT$ and 34,533.7 ± 115,891.7 NT$, respectively. Male beneficiaries tended to have higher average annual medical expenses and mean medical expenses per visit than female beneficiaries. The three most frequent principal diagnoses at ambulatory visits were circulatory system diseases, musculoskeletal system and connective tissue diseases and digestive system diseases. We conclude that the elderly with intellectual disabilities had higher demand than the general population for healthcare services, and the NHI program lowers the barrier to care for populations with special needs.

Patterns of ambulatory medical care utilization in elderly patients with special reference to chronic diseases and multimorbidity--results from a claims data based observational study in Germany

BACKGROUND

In order to estimate the future demands for health services, the analysis of current utilization patterns of the elderly is crucial. The aim of this study is to analyze ambulatory medical care utilization by elderly patients in relation to age, gender, number of chronic conditions, patterns of multimorbidity, and nursing dependency in Germany.

METHODS

Claims data of the year 2004 from 123,224 patients aged 65 years and over which are members of one nationwide operating statutory insurance company in Germany were studied. Multimorbidity was defined as the presence of 3 or more chronic conditions of a list of 46 most prevalent chronic conditions based on ICD 10 diagnoses. Utilization was analyzed by the number of contacts with practices of physicians working in the ambulatory medical care sector and by the number of different physicians contacted for every single chronic condition and their most frequent triadic combinations. Main statistical analyses were multidimensional frequency counts with standard deviations and confidence intervals, and multivariable linear regression analyses.

RESULTS

Multimorbid patients had more than twice as many contacts per year with physicians than those without multimorbidity (36 vs. 16). These contact frequencies were associated with visits to 5.7 different physicians per year in case of multimorbidity vs. 3.5 when multimorbidity was not present. The number of contacts and of physicians contacted increased steadily with the number of chronic conditions. The number of contacts varied between 35 and 54 per year and the number of contacted physicians varied between 5 to 7, depending on the presence of individual chronic diseases and/or their triadic combinations. The influence of gender or age on utilization was small and clinically almost irrelevant. The most important factor influencing physician contact was the presence of nursing dependency due to disability.

CONCLUSION

In absolute terms, we found a very high rate of utilization of ambulatory medical care by the elderly in Germany, when multimorbidity and especially nursing dependency were present. The extent of utilization by the elderly was related both to the number of chronic conditions and to the individual multimorbidity patterns, but not to gender and almost not to age.

Measuring change in health status of older adults at the population level: the transition probability model

Background

The current demographic transition will lead to increasing demands on health services. However, debate exists as to the role age plays relative to co-morbidity in terms of health services utilization. While age has been identified as a critical factor in health services utilization, health services utilization is not simply an outcome of ill health, nor is it an inevitable outcome of aging. Most data on health service utilization studies assess utilization at one point in time, and does not examine transitions in health service utilization. We sought to measure health services utilization and to investigate patterns in the transition of levels of utilization and outcomes associated with different levels of utilization.

Methods

We conducted a population-based retrospective cohort study of all Ontario residents aged 65+ eligible for public healthcare coverage from January 1998-December 2006. The main outcome measure was total number of utilization events. The total is computed by summing, on a per annum basis, the number of family physician visits, specialist visits, Emergency Department visits, drug claims, lab claims, X-rays, CT scans, MRI scans, and inpatient admissions. Three categories of utilization were created: low, moderate, and high.

Results

There is heterogeneity in health services utilization across the late lifespan. Utilization increased consistently in the 9-year study period. The probability of remaining at the high utilization category when the person was in the high category the previous year was more than 0.70 for both males and females and for all age groups. Overall healthcare utilization increases more rapidly among the high users compared to the low users. There was negligible probability for moving from high to low utilization category. Probability of death increased exponentially as age increased. Older adults in the low utilization category had the lowest probability of death. The number of male nonagenarians increased more rapidly than female nonagenarians.

Conclusion

There are measurable and identifiable differences in the patterns of health services utilization among older adults. This data will permit clinicians and policy makers to tailor interventions appropriate to the risk class of patients.

Trends in health services utilization, medication use, and health conditions among older adults: a 2-year retrospective chart review in a primary care practice

BACKGROUND

Population aging poses significant challenges to primary care providers and healthcare policy makers. Primary care reform can alleviate the pressures, but these initiatives require clinical benchmarks and evidence regarding utilization patterns. The objectives of this study is to measure older patients' use of health services, number of health conditions, and use of medications at the level of a primary care practice, and to investigate age- and gender-related utilization trends.

METHODS

A cross-sectional chart audit over a 2-year study period was conducted in the academic family practice clinic of Sunnybrook Health Sciences Centre in Toronto, Ontario, Canada. All patients 65 years and older (n = 2450) were included. Main outcome measures included the number of family physician visits, specialist visits, emergency room visits, surgical admissions, diagnostic test days, inpatient hospital admissions, health conditions, and medications.

RESULTS

Older patients (80-84 and 85+ age-group) had significantly more family physician visits (average of 4.4 visits per person per year), emergency room visits (average of 0.22 ER visits per year per patient), diagnostic days (average of 5.1 test days per person per year), health conditions (average of 7.7 per patient), and medications average of 8.2 medications per person). Gender differences were also observed: females had significantly more family physician visits and number of medications, while men had more specialist visits, emergency room visits, and surgical admissions. There were no gender differences for inpatient hospital admissions and number of health conditions. With the exception of the 85+ age group, we found greater intra-group variability with advancing age.

CONCLUSION

The data present a map of greater interaction with and dependency on the health care system with advancing age. The magnitudes are substantial and indicate high demands on patients and families, on professional health care providers, and on the health care system itself. There is the need to create and evaluate innovative models of care of multiple chronic conditions in the late life course.