Predictors of health care utilization in the chronically ill: a review of the literature

Risk factors for hospitalization among community-dwelling primary care older patients: development and validation of a predictive model

BACKGROUND

Unplanned hospitalization often represents a costly and hazardous event for the older population.

OBJECTIVES

To develop and validate a predictive model for unplanned medical hospitalization from administrative data.

RESEARCH DESIGN

Model development and validation.

SUBJECTS

A total of 3919 patients aged > or =70 years who were followed for at least 1 year in primary care clinics of an academic medical center.

MEASURES

Risk factor data and the primary outcome of unplanned medical hospitalization were obtained from administrative data.

RESULTS

Of 1932 patients in the development cohort, 299 (15%) were hospitalized during 1 year follow up. Five independent risk factors were identified in the preceding year: Deyo-Charlson comorbidity score > or =2 [adjusted relative risk (RR) = 1.8; 95% confidence interval (CI): 1.4-2.2], any prior hospitalization (RR = 1.8; 95% CI: 1.5-2.3), 6 or more primary care visits (RR = 1.6; 95% CI: 1.3-2.0), age > or =85 years (RR = 1.4; 95% CI: 1.1-1.7), and unmarried status (RR = 1.4; 95% CI: 1.1-1.7). A risk stratification system was created by adding 1 point for each factor present. Rates of hospitalization for the low- (0 factor), intermediate- (1-2 factors), and high-risk (> or =3 factors) groups were 5%, 15%, and 34% (P < 0.0001). The corresponding rates in the validation cohort, where 328/1987 (17%) were hospitalized, were 6%, 16%, and 36% (P < 0.0001).

CONCLUSIONS

A predictive model based on administrative data has been successfully validated for prediction of unplanned hospitalization. This model will identify patients at high risk for hospitalization who may be candidates for preventive interventions.

Disparities in use of mental health and substance abuse services by Asian and Native Hawaiian/other Pacific Islander women

The purpose of this study was to determine if disparities exist in lifetime utilization of mental health/substance abuse services among Asian, Native Hawaiian/Other Pacific Islander (NHOPI) and white mothers. The study sample was comprised of mothers assessed to be at-risk (n = 491) and not at-risk (n = 218) for child maltreatment in the Hawaii Healthy Start Program study. Multiple logistic regression models were used to test the effects of predisposing, need, and enabling factors on utilization of services. Results revealed that, among mothers with depressive symptoms, compared with whites, Asians and NHOPI were significantly less likely to have received services. There were no significant racial differences in use of mental health/substance use services by other factors. These results suggest that racial disparities exist in utilization of mental health/substance abuse services among mothers with depressive symptoms. Future research is needed to identify barriers and facilitators to accessing needed services for Asian and NHOPI women.

Excess use of general practitioners by obese adults: Does health-related quality of life account for the association?

As general practitioners (GP) are seeing, and are likely to continue to see, increasing numbers of obese patients in their practices, it is relevant to know with which needs these patients enter general practice. The present study aims to determine whether besides physical comorbidities, health-related quality of life (HRQOL) accounts for associations of obesity with GP use. In a general population survey in Augsburg, Germany (KORA-Survey S4 1999/2001), anthropometric body mass (BMI in kg/(m(2))), physical comorbidities, HRQOL (the 12-item Short Form; SF-12), and visits to GP were assessed, and analyzed by logistic and zero-truncated negative binomial regressions (two-part model). Gender, age, socio-economic status, marital status, health insurance, and place of residence were adjusted for. The sample consisted of N = 942 residents aged 25 - 74, who had been randomly sampled from 17 cluster-sampled communities, and were either normal-weight, overweight, moderately obese, or severely obese. The moderately obese group had higher odds than the normal-weight to report any GP use; however, while being predictive, neither physical comorbidity nor HRQOL mediated this. In contrast, with regard to number of GP visits among users, the severely obese group (BMI >/= 35) reported significantly more visits than the normal-weight group, and both physical comorbidity and physical (but not mental) HRQOL accounted for this. In conclusion, physical comorbidity and HRQOL mediate excess use of GP by severely obese users in terms of number of visits. Thus, for this group, subjective physical health seems to be important besides physical comorbidities, suggesting for general practice to focus both on evaluated and perceived needs of these patients.

Utilization of health-care resources by patients with IBD in Manitoba: a profile of time since diagnosis

OBJECTIVES

We tested the hypothesis of nonlinear longitudinal trends in health-care utilization by individuals with Crohn's disease (CD) and ulcerative colitis (UC) in Manitoba.

METHODS

Administrative databases were used to report resource use in 2000/1. A total of 5,485 cases of CD and UC and 45,279 matched controls were separated into incident cases (0-2 yr of disease), cases with longstanding disease (3-10 yr), and cases with very longstanding disease (>10 yr). Relative risk ratios (RRR) indicating the likelihood of resource use, given disease duration, were computed using multinomial logistic regression analysis. Sensitivity analysis was conducted to test the robustness of results to altering the disease duration cutoffs.

RESULTS

Independent of disease duration, in general, outpatient utilization was over twice as likely among IBD cases compared with controls whether or not the contact was made for IBD-specific reasons. The likelihood of utilization was greatest among incident cases for outpatient visits with an internist (RRR 6.16, 95% CI 5.11-7.43) and surgical visits (RRR 3.78, 95% CI 3.14-4.55). Inpatient stays for IBD-specific reasons in general were considered dependent on disease duration; in particular, there was a fourfold higher likelihood for the incident cases relative to their controls. For non-IBD-specific reasons, IBD cases were 1.5 times as likely to have inpatient stays, regardless of disease duration.

CONCLUSIONS

Our results suggest that within the first 2 yr from disease diagnosis the most costly resources were employed. We can likely measure the greatest proportion of treatment effects on resource use within a relatively short period.

Satisfaction with the access to the health services of the people with chronic conditions in Estonia

After the implementation of the primary health care reform in Estonia, most of chronic conditions are managed by family doctors (FD) in collaboration with specialists. Although the general population has demonstrated the increase in satisfaction with health care after the reform, it has been questioned if people with chronic diseases have been left on a more disadvantaged position in the new system with some restrictions in the access to specialists.

OBJECTIVE

To investigate the satisfaction of people with chronic conditions with the access to the health services and compare them to those who did not have a chronic illness.

METHOD

In November 2005, a random sample of Estonian residents aged 15-74 were personally interviewed using structured questionnaires (n=1446), 29% of them reported to have a chronic illness.

RESULTS

The people with chronic conditions were less satisfied with the access to the health services. They were more satisfied with their family doctors, but less with the health insurance system and they often reported their problems in seeing the specialist. Compared to other respondents, the people with chronic conditions visited their FDs and specialists more often, but no significant differences were found between their waiting times to see the FD or a specialist.

CONCLUSION

In Estonia, the people with chronic conditions do not have organisational barriers in their access to the health services. As frequent users of health services, they perceive the shortages of the health system more obviously than the rest of the population and it may reflect their satisfaction with the different aspects of the health system as well as the access to the health services.

Outpatient visit chaining among patients with serious mental illness

BACKGROUND

To reduce travel burdens, patients may coordinate outpatient services to receive multiple encounters during a single day. Unmeasured visit "chaining" may bias estimates of the impact of accessibility barriers when utilization volume is measured using visit days. No studies have evaluated differential encounter chaining by distance.

OBJECTIVES

We sought to evaluate the prevalence and predictors of visit chaining among patients with serious mental illnesses (SMIs), to evaluate whether patients living farther from providers are more likely to chain encounters, and to assess distance barriers using alternative measures of utilization volume.

DATA SOURCES

We used the Veterans Affairs (VA) National Psychosis Registry, including Fiscal Year 2000 diagnosis and utilization data for 141,275 VA patients with SMI diagnoses.

STUDY DESIGN

Random intercepts hierarchical regression to examine the relationship between distance to nearest VA provider and encounters/visit day, adjusting for age, gender, race/ethnicity, marital status, service-connection, previous hospitalization, and treatment setting and comorbidities at initial use. Negative binomial regressions to evaluate distance effects on visit day and encounter volume. Analyses adjusted for patient clustering within facilities.

PRINCIPAL FINDINGS

With increased distance, patients had more encounters/visit day. Patients with bipolar disorder were more likely than patients with schizophrenia or other psychoses to chain treatments in association with greater distances.

CONCLUSIONS

When utilization volume is measured in terms of visit days, analyses may overestimate distance barriers, because remote patients are more likely to chain encounters within visit days. However, distance remains a substantial barrier limiting total outpatient visit volume. Enhanced services coordination may reduce accessibility barriers for remote patients.

Factors associated with potentially inappropriate drug utilization in a sample of rural community-dwelling older adults

BACKGROUND

Many medications present special risks when used by older adults (ie, those aged > or = 65 years) and are considered potentially inappropriate for this population. The Beers criteria are often used to identify such medications. Past research has documented that use of Beers drugs is common among older adults.

OBJECTIVE

The aim of this work was to examine factors associated with potentially inappropriate drug use among rural community-dwelling older adults using a conceptual framework adapted from the Andersen-Newman behavioral model of health service use.

METHODS

This was a population-based, cross-sectional survey. Data were collected via face-to-face home interviews between 2002 and 2004. Rural community-dwelling older adults residing in a single county in North Carolina were eligible. Potentially inappropriate drug use was operationalized using the Beers criteria. Data concerning predisposing (ie, age, sex, race, education, and marital status), enabling (ie, social support and insurance status), need (ie, disability and history of major depression, hypertension, osteoarthritis, back problems, or other comorbidities), and utilization factors (ie, number of medications used) were collected.

RESULTS

Data were gathered from 892 people, with information on medication use available for 800. Two hundred thirteen of these 800 participants (26.6%) used > or = 1 Beers drug. Compared with individuals who used no Beers drugs, those who used > or = 1 Beers drug reported lower levels of social support (odds ratio [OR], 0.94; 95% CI, 0.90-0.99) and higher levels of disability (OR, 1.48; 95% CI, 1.11-1.97), used more medications (OR, 1.07; 95% CI, 1.01-1.13), and were more likely to have a history of major depression (OR, 1.67; 95% CI, 1.05-2.66), hypertension (OR, 1.58; 95% CI, 1.07-2.33), osteoarthritis (OR, 1.58; 95% CI, 1.09-2.29), and back problems (OR, 1.72; 95% CI, 1.19-2.47).

CONCLUSION

As suggested by the Andersen-Newman model, the risk of potentially inappropriate drug use is highest among those with the greatest medication needs, as evidenced by poorer health status in this sample of rural community-dwelling older patients.

Quantifying the effect of health status on health care utilization using a preference-based health measure

The purpose of this study was to quantify the effect of health status on current and future payments and number of visits to health professionals in a large, representative community sample in British Columbia, Canada. The study population was comprised of all respondents to the 1994/5 cycle of the Canadian National Population Health Survey (NPHS) who were 12 years of age or older and residing in the province of British Columbia (N = 2084). Health status was measured with the Health Utilities Index (HUI). Two outcomes were defined for each subject: (a) the sum of all healthcare costs covered by the Medical Services Plan, incurred during a given fiscal year, and (b) the total number of visits to all health practitioners during the same year. Outcome data were obtained for a period 1994-1998. We examined the relationship between the HUI and healthcare use in a multivariate log-linear model. In the full sample, better health in 1994-1995 was associated with lower healthcare cost and lower number of visits from 1994 through 1998. The overall adjusted cost ratio was 0.89 (99% CI = 0.85, 0.94) and the overall adjusted visit ratio was 0.91 (99% CI + 0.87, 0.95). The effect of health status on the costs of care and on the number of visits was similar in men and women, was stronger in persons less than 45 years of age compared to those 45+, and was not different according to place of residence. We conclude that the HUI is a strong predictor of health services use over 5 years. A 0.1 improvement in health utility is associated with a 10% reduction in the costs of care and number of visits to health professionals.

The associations between psychological distress and cancer prevention practices

The aim of the current study was to determine the extent to which psychological distress is associated with cancer prevention practices among otherwise healthy adults in the community (N=30,223). Using data from the 2000 National Health Interview Survey, a series of multiple logistic regression analyses were used to estimate the associations between psychological distress and selected cancer prevention practices. Results indicate that psychological distress was directly associated with an increased likelihood of daily cigarette smoking, physical inactivity, and obesity. Only smoking status mediated the relation between psychological distress and perceived cancer risk. Individuals who reported higher psychological distress were more likely to engage in specific cancer screenings before reaching the recommended age. This effect was partially mediated by perceived cancer risk. The higher levels of cigarette smoking and physical inactivity among psychologically distressed adults support the need for integration of cancer prevention and mental health interventions to reduce specific cancer risk in high-risk adults. Further research is needed to differentiate the causal pathways and mechanisms linking heightened individual cancer risk, potentially comorbid mental disorders or psychological conditions, and cancer screening adherence.

Psychological distress and quality of life in hospitalized patients with chronic obstructive pulmonary disease

BACKGROUND

Knowledge of what may influence patients' perceptions of quality of life is essential for improving nursing interventions, but there has been little research on the influence of psychological distress on health status and quality of life among patients with chronic obstructive pulmonary disease.

AIM

This paper reports a study whose aim was to examine how disease factors and health status affect psychological distress and subjectively perceived quality of life in patients admitted for an acute exacerbation of chronic obstructive pulmonary disease.

METHOD

A convenience sample of 92 inpatients (mean age 69 years) were interviewed using the St George's Respiratory Questionnaire, Hopkins Symptoms Check List (23 item version), and World Health Organization Quality of Life Assessment. Disease variables (disease duration and pulmonary function) and health status were entered in blockwise multivariate regression analyses to examine the relationships between disease variables, psychological distress, and a single item assessment of overall quality of life.

RESULTS

The St George's Respiratory Questionnaire Total and Impact subscores showed statistically significant associations with psychological distress. Pulmonary function showed a moderately significant association with subjective perceived quality of life. Pulmonary function and disease duration explained a minor part of the variance in quality of life. Psychological distress had a statistically significant association with quality of life and accounted for 34% of the total 39% variance explained by our model.

CONCLUSIONS

The influence of psychological distress on quality of life implies that bringing about change in psychological distress factors may have important consequences for quality of life. The findings should be taken seriously in developing future nursing interventions for this group of patients.

Complementary medicine and older people: past research and future directions

Due to the natural aging processes, older people are particularly susceptible to a range of chronic health conditions. However, despite that research has indicated that chronic health conditions and disability act as reliable predictors of complementary/alternative medicine (CAM) use, despite research evidence that older people are significant consumers of CAM, and regardless of the potential for CAM to enhance successful aging, reduce frailty, and increase independence and quality of life in older persons, older people's use of CAM therapies remains under-researched. This paper reviews what existing research literature is there on CAM use in older age; considers rates of and potential for use, features of and barriers to use, and economic, effectiveness and safety issues. From these beginnings, outlined is a wide-ranging research agenda on CAM and older people.

Clustering patients according to health perceptions: relationships to psychosocial characteristics and medication nonadherence

BACKGROUND

Little is known about how patients rate their health perceptions. Our objectives were to identify systematic multivariate patterns of perceptions using cluster analysis, and to investigate associations among the clusters, psychosocial characteristics and medication nonadherence.

METHODS

Demographic, clinical and psychosocial data on 200 patients with inflammatory bowel disease (IBD) were collected prior to the index office visit and health perceptions were collected afterwards. Cluster analysis using a k-means method was used to identify subgroups of patients based on their responses to the Patient-Physician Discordance Scales (PPDS), an instrument that assesses perceptions of health status and of the clinical visit.

RESULTS

We identified five different patient groups: a "healthy, not distressed, good communication, low expectation for medication/testing" group; a "healthy, relatively distressed, good communication, high expectation for medication, low expectation for testing" group; a "symptomatic, distressed, good communication, high expectation for medication/testing" group; a "healthy, not distressed, good communication, high expectation for medication/testing" group; and a "relatively healthy, relatively distressed, poor communication, low expectation for medication/testing" group. After adjustment for age, sex, language, form of IBD, and disease activity, statistically significant between-clusters differences were found in psychological distress, social support satisfaction and medication nonadherence.

CONCLUSIONS

Distinct patterns of patients' health perceptions correlated with psychological health and adherence to treatment. This categorization may be used to help identify patients at higher risks for ineffective communication and nonadherence to medication.

Analysis of hospital charges for ischemic stroke in Fukuoka, Japan

OBJECTIVES

Stroke is a heavy economic burden on individuals, society, and health services in Japan, where health expenditures are rising rapidly. The objective of the present study was to examine medical services and demographic factors associated with increased inpatient charges for ischemic stroke in Japan.

SUBJECTS AND METHODS

The study subjects were 316 patients with a principal diagnosis of acute ischemic stroke who were discharged from the National Kyushu Medical Center Hospital from 1 July 1995 through 31 June 1999. Demographic, clinical, and administrative data were retrospectively collected from medical records and the hospital Clinical Financial Information System (CFIS). The influence of social and medical factors on total charges was analyzed using the stepwise multiple regression model.

RESULTS

Among the total subjects, the mean (median) length of hospital stay (LOHS) was 33 (30) days (range, 2-155 days). The mean (median) hospital charge per patient was US dollars 9020 (dollars 7974) with a range of dollars 336-54,509. The distribution of charges was 42% for fundamental, 17% for injection therapies, 13% for radiological test, 11% for other laboratory examinations, 3% for drugs, and 3% for operations. Stepwise multiple regression analysis revealed that LOHS was the key determinant of the hospital charge (partial R2=0.5993, P=0.0001). Operations (P=0.0001) and angiography (P=0.03) were also independent but less contributory determinants of the hospital charge.

CONCLUSIONS

LOHS was strongly, positively associated with inpatient charges for ischemic stroke in Japan. This implies that significant charge reductions are more likely to rely on shortening LOHS, which probably can be achieved by altering reimbursement policies.

Health-related quality of life and cost of ambulatory care in osteoporosis: how may such outcome measures be valuable information to health decision makers and payers?

The objective was to quantify the outcome of osteoporosis (OP) in terms of health-related quality of life (HR-QOL) and cost of ambulatory care and to look at the association between these two outcomes variables. A cross-sectional health survey of 4800 Belgian individuals over the age of 45 years was used. Individuals having reported OP were retrieved and for each of them, at least two matched individuals for age, sex, residency location, and health insurance status were identified. All individuals were assessed with the SF-36. The two major health insurance providers furnished cost value for ambulatory care. HR-QOL and cost data were compared between the OP group and control group. Beta-coefficients from linear regression were calculated to give information on the relative importance of the association between each SF-36 dimensions and cost of ambulatory care. Of 4796 individuals appropriately surveyed, 221 (4.8%) reported OP. The control group included 651 individuals. The OP group experienced impaired HR-QOL compared to their matched counterparts, all the difference in mean or median SF-36 scores being significant at the level of P < 0.001. Osteoporotic respondents averaged 816 in cost of ambulatory care whereas controls averaged 579 (P < 0.001). When looking at detailed comparisons between categories of cost, costs in the OP group far exceeded those in the control group, all the differences being significant at the level of P < 0.001 except for home health nurse (P = 0.012). In the OP group, vitality dimensions played the most important role in the determination of cost (beta = -0.28, P < 0.001), followed by physical functioning (beta = -0.26, P < 0.01), general health, and social functioning (beta = -0.23, P < 0.01). This study evidences the burden of OP in terms of HR-QOL and cost of ambulatory care. Exploring the association between HR-QOL and cost show that mental dimension such as vitality can play an important role in the determination of cost. Conclusively, they should not be neglected in future management of OP.

Depression, functional status, treatment for psychiatric problems, and the health-related practices of elderly HMO members

PURPOSE

To study relationships between depression, functional limitations, psychiatric treatment, and the health-related practices of elderly individuals.

DESIGN

Cross-sectional, observational study based on survey data (response rate = 90%) analyzed using multiple linear and logistic regression models.

SETTING

Kaiser Permanente Northwest, a large nonprofit HMO.

SUBJECTS

Medicare members (4615) aged 65-103 years who responded to a health status survey.

MEASURES

Depression, health and functional status, frequency of alcohol consumption, smoking status, advance medical directive completion, influenza or pneumonia vaccinations, mammograms, recent psychiatric treatment, and attempts to lose weight or increase exercise.

RESULTS

Self-reported depression was related to a greater risk of smoking (odds ratio [OR] = 1.54). Health-related functional limitations were related to fewer attempts to change health behaviors and less preventive service use (significant ORs ranged from 0.84 to 0.94). Minority group membership and Supplemental Security Income were negatively associated with better health practices and with completing advance medical directives (ORs 0.41 and 0.79, respectively). Falls in the prior year, more prescription medications, and psychiatric treatment were positively associated with better health practices (significant ORs ranged from 1.12 to 1.88).

CONCLUSIONS

Depression and smoking are associated among elderly individuals, as are psychiatric treatment and attempts to lose weight. Those with functional limitations, minority status, or Supplemental Security Income use fewer preventive services; the latter two groups are less likely to complete advance medical directives. Older adults with these characteristics might need assistance in improving health-related practices.

Predicting the cost of hospital stay for stroke patients: the use of diagnosis related groups

In order to provide tailor-made care, governments are considering the implementation of output-pricing based on hospital case-mix measures, such as diagnosis related groups (DRG). The question is whether the current DRG classification system can provide a satisfactory prediction of the variance of costs in stroke patients and if not, in what way other variables may enhance this prediction. In this study, data from 731 stroke patients hospitalized at University Hospital Maastricht during 1996-1998 are used in the cost analysis. The DRG classification for this group uses information--in addition to the DRG classification operation or no operation--on the patient's age combined with discharge status. The results of regression analysis show that using DRGs, the variance explained in the costs amounts to 34%. Adding other variables to the DRGs, the variance explained increases to about 61%. Additional factors highly correlating with inpatient costs are the level of functioning after stroke, comorbidity, complications, and 'days of stay for non-medical reasons'. Costs decreased for stroke patients discharged during the latter part of the years studied, and if stroke patients happened to die during their hospital stay. The results do suggest that future implementation of output-pricing based on the DRG case-mix measures is feasible for stroke patients only if it is enhanced with information on complications and the level of functioning.

Analysis of hospital charges for cerebral infarction stroke inpatients in Beijing, People's Republic of China

OBJECTIVE

Stroke is a heavy economic burden on the individuals, society and health services in China, where health expenditure is rising rapidly. The purpose of the present study is to examine health services and demographic factors associated with inpatient charges for cerebral infarction in China, focusing on hospital charges of insured and uninsured patients.

METHODS

The study subjects were 545 patients with a principal diagnosis of cerebral infarction stroke who were discharged from the China-Japan Friendship Hospital from January 1, 1997 through December 31, 1998. Demographic, clinical and administrative data were retrospectively collected from the medical record and financial database. The influence of social and medical factors on total charges was analyzed with stepwise multiple regression model.

RESULTS

Of 545 subjects, 429 (79%) were the insured patients and 116 (21%) were the uninsured patients. Length of hospital stay (LOHS) for the insured patients (median, 32 days) was significantly longer (P<0.001) than that for the uninsured (median, 23 days). The hospital charges per discharge for the insured was significantly higher (geometric mean, 10407 yuan) (P<0.0001) than that for the uninsured patients (geometric mean, 5857 yuan). With stepwise multiple regression, factors associated independently with the hospital charge were: longer hospital stay, insurance status, increased number of head magnetic resonance imaging (MRI) and computerized tomography (CT), infection in hospital stay, and more severe condition of stroke.

CONCLUSIONS

Inpatient charge for cerebral infarction stroke was positively associated with being the insured. The findings suggest an overuse of health care resources in insured patients and limited use of resources by those who are not.

Effect of group therapy for breast cancer on healthcare utilization

PURPOSE

The purpose of this study was to determine whether participation in a group psychosocial intervention by patients with breast cancer would result in an improvement in psychological measures and in reduced billings in general medical expenses.

DESCRIPTION OF STUDY

Eligible women who had completed treatment for stage 0, I, or II primary breast cancer were prospectively and randomly assigned to either the intervention (n=46) or control (n=43) group. Both groups received the usual psychosocial care; however, the intervention group also participated in six weekly cognitive/behavioral psychosocial meetings. All were assessed on psychiatric symptoms, mood, depression, and coping strategies at four time periods: pre-intervention, post-intervention, 1-year follow-up, and 2-year follow-up. Alberta Healthcare billing records were obtained covering the 2-year follow-up period to determine the amount billed per person over the course of the study.

RESULTS

Women in the intervention group had less depression, less overall mood disturbance, better overall quality of life, and fewer psychiatric symptoms than those in the control group, beginning immediately post-intervention and remaining so at 2 years post-intervention. Billing in the intervention group was an average of $147 less than in the control group, a 23.5% reduction.

CLINICAL IMPLICATIONS

This is the first study to show that a psychosocial intervention can reduce direct healthcare billings in a sample of patients with cancer. Importantly, these findings help to justify the routine availability of such programs in cancer treatment facilities worldwide.

Predicting elderly people's risk for nursing home placement, hospitalization, functional impairment, and mortality: a synthesis

Long-term care resources would be allocated more cost-effectively if care planning and medical/functional eligibility decisions were grounded more firmly in extant evidence regarding the risk of nursing home placement, hospitalization, functional impairment, and mortality. This article synthesizes the studies that longitudinally assess the predictors of each of these outcomes for the 65 and older population in the United States. A database was assembled containing 167 multivariate analyses abstracted from 78 journal articles published between 1985 and 1998. Findings show that 22 risk factors consistently predict two or more outcomes, including three that predict all four: worse performance on physical function measures not based on activities of daily living, greater illness severity, and prior hospital use. Findings should help prioritize variable selection choices of those setting eligibility criteria, allocating care resources, and doing descriptive studies. Gaps are shown to exist in the understanding of outcome effects of facility, market, policy, and other system attributes.

Influence of quality of care on quality of life in inflammatory bowel disease (IBD): literature review and studies planned

Inflammatory bowel disease (IBD) is a chronic disorder with an early onset in life. Therefore, it is reasonable to assume that IBD patients are in considerable need of health care. The quality of life of IBD patients is reported to be impaired. Whether optimizing the quality of health care for these patients may positively influence their quality of life is a question that has been raised often during recent years. This review of the literature on health care research discusses different concepts regarding the quality of care assessment in chronic disease, stresses the need to see things from the patient's perspective, and provides recommendations to optimize health care research. The two most important conclusions that can be drawn are that: (1) the relationship between quality of health care and quality of life in IBD is one that is certainly worth studying; and (2) when developing a means to assess patient data on quality of care, it is essential to involve patients from the very start.

The disease process and utilization of health services in rheumatoid arthritis: The relative contributions of various markers of disease severity in explaining consumption patterns

OBJECTIVE

To examine the predictive ability of a wide array of measures of disease severity in explaining Dutch and German patterns of health services utilization during a 2-year period.

METHODS

Slightly over 200 rheumatoid arthritis (RA) patients, 136 from a Dutch and 98 from a German outpatient clinic, supplied information on symptom and functional status, global health, and emotional and social functioning at baseline. The patients' rheumatologists provided clinical assessments of functional grade and disease activity. A questionnaire mailed twice at 12-month intervals was the source of retrospective information on physician consultations, hospitalization, and referrals for surgery and physical therapy during the previous period. Major determinants of use were studied with multivariate analyses.

RESULTS

German patients reported more frequent physician contacts than Dutch patients, but the volume of surgery, hospital admissions, and referrals for physical therapy did not differ between the two countries. In a hierarchical regression, the consultation rate was directly associated with pain quality and global health. Markers of RA progression were related to surgery, and the latter to volume of in-hospital care. Fatigue severity and physical disability predicted referrals for physical therapy. Patient self-management activities were only weakly associated with disease severity variables.

CONCLUSION

The activity and damage components of RA were related to the separate components of total health service utilization. Disease activity was the prime determinant of physician services used, and RA progression the determinant of surgical interventions and hospitalization.