Dataset Information

The central role of comorbidity in predicting ambulatory care sensitive hospitalizations.

ABSTRACT:

Background

Ambulatory care sensitive hospitalizations (ACSHs) are commonly used as measures of access to and quality of care. They are defined as hospitalizations for certain acute and chronic conditions; yet, they are most commonly used in analyses comparing different groups without adjustment for individual-level comorbidity. We present an exploration of their roles in predicting ACSHs for acute and chronic conditions.

Methods

Using 1998-99 US Medicare claims for 1 06 930 SEER-Medicare control subjects and 1999 Area Resource File data, we modelled occurrence of acute and chronic ACSHs with logistic regression, examining effects of different predictors on model discriminatory power.

Results

Flags for the presence of a few comorbid conditions-congestive heart failure, chronic obstructive pulmonary disease, diabetes, hypertension and, for acute ACSHs, dementia-contributed virtually all of the discriminative ability for predicting ACSHs. C-statistics were up to 0.96 for models predicting chronic ACSHs and up to 0.87 for predicting acute ACSHs. C-statistics for models lacking comorbidity flags were lower, at best 0.73, for both acute and chronic ACSHs.

Conclusion

Comorbidity is far more important in predicting ACSH risk than any other factor, both for acute and chronic ACSHs. Imputations about quality and access should not be made from analyses that do not control for presence of important comorbid conditions. Acute and chronic ACSHs differ enough that they should be modelled separately. Unaggregated models restricted to persons with the relevant diagnoses are most appropriate for chronic ACSHs.

SUBMITTER: Saver BG

PROVIDER: S-EPMC3901312 | biostudies-literature | 2014 Feb

REPOSITORIES: biostudies-literature

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Publications

The central role of comorbidity in predicting ambulatory care sensitive hospitalizations.

Saver Barry G BG Wang Ching-Yun CY Dobie Sharon A SA Green Pamela K PK Baldwin Laura-Mae LM

European journal of public health 20130328 1

<h4>Background</h4>Ambulatory care sensitive hospitalizations (ACSHs) are commonly used as measures of access to and quality of care. They are defined as hospitalizations for certain acute and chronic conditions; yet, they are most commonly used in analyses comparing different groups without adjustment for individual-level comorbidity. We present an exploration of their roles in predicting ACSHs for acute and chronic conditions.<h4>Methods</h4>Using 1998-99 US Medicare claims for 1 06 930 SEER-M ...[more]

PMID: 23543676

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Project description:BackgroundHospitalizations for ambulatory care-sensitive conditions (ACSCs), conditions that should not require inpatient treatment if timely and appropriate ambulatory care is provided, may be an important contributor to rising healthcare costs and public health burden.ObjectiveTo examine if probable major depression is independently associated with hospitalization for an ACSC in patients with diabetes.DesignSecondary analysis of data from a prospective cohort study.ParticipantsPopulation-based cohort of 4,128 patients with diabetes ≥ 18 years old seen in primary care, who were enrolled between 2000 and 2002 and followed for 5 years (through 2007).Main measuresDepressive symptoms were assessed with the Patient Health Questionnaire-9. Outcomes of interest included time to initial hospitalization for an ACSC and total number of ACSC-related hospitalizations. We used Cox proportional hazards regression models to ascertain an association between probable major depression and time to ACSC-related hospitalization, as well as Poisson regression for models examining probable major depression and number of ACSC-related hospitalizations.Key resultsPatients' mean age at study enrollment was 63.4 years (Standard Deviation: 13.4 years). Over the 5-year follow-up period, 981 patients in the study were hospitalized a total of 1,721 times for an ACSC, comprising 45.1 % of all hospitalizations. After adjusting for baseline demographic, clinical and health-risk behavioral factors, probable major depression was associated with initial ACSC-related hospitalization (Hazard Ratio: 1.41, 95 % Confidence Interval [95 % CI]: 1.15, 1.72) and number of ACSC-related hospitalizations (Relative Risk: 1.37, 95 % CI: 1.12, 1.68).ConclusionsProbable major depression in patients with diabetes is independently associated with hospitalization for an ACSC. Additional research is warranted to ascertain if effective interventions for depression in patients with diabetes could reduce the risk of hospitalizations for ACSCs and their associated adverse outcomes.

Project description:BACKGROUND:Hospitalizations for chronic ambulatory care sensitive conditions are an important indicator of health system equity and performance. Chronic ambulatory care sensitive conditions refer to chronic diseases that can be managed in primary care settings, including angina, asthma, and diabetes, with hospitalizations for these conditions considered potentially avoidable with adequate primary care interventions. Socioeconomic inequities in the risk of hospitalization have been observed in several health systems globally. While there are multiple studies examining the association between socioeconomic status and hospitalizations for chronic ambulatory care sensitive conditions, these studies have not been systematically reviewed. The objective of this study is to systematically identify and describe socioeconomic inequalities in hospitalizations for chronic ambulatory care sensitive conditions amongst adult populations in economically developed countries reported in high-quality observational studies published in the peer-reviewed literature. METHODS:Peer-reviewed literature was searched in six health and social science databases: MEDLINE, EMBASE, PsycInfo, CINAHL, ASSIA, and IBSS using search terms for hospitalization, socioeconomic status, and chronic ambulatory care sensitive conditions. Study titles and abstracts were first screened followed by full-text review according to the following eligibility criteria: 1) Study outcome is hospitalization for selected chronic ambulatory care sensitive conditions; 2) Primary exposure is individual- or area-level socioeconomic status; 3) Study population has a mean age ± 1 SD < 75 years of age; 4) Study setting is economically developed countries; and 5) Study type is observational. Relevant data was then extracted, and studies were critically appraised using appropriate tools from The Joanna Briggs Institute. Results were narratively synthesized according to socioeconomic constructs and type of adjustment (minimally versus fully adjusted). RESULTS:Of the 15,857 unique peer-reviewed studies identified, 31 studies met the eligibility criteria and were of sufficient quality for inclusion. Socioeconomic constructs and hospitalization outcomes varied across studies. However, despite this heterogeneity, a robust and consistent association between lower levels of socioeconomic status and higher risk of hospitalizations for chronic ambulatory care sensitive conditions was observed. CONCLUSIONS:This systematic review is the first to comprehensively identify and analyze literature on the relationship between SES and hospitalizations for chronic ambulatory care sensitive conditions, considering both aggregate and condition-specific outcomes that are common to several international health systems. The evidence consistently demonstrates that lower socioeconomic status is a risk factor for hospitalization across global settings. Effective health and social interventions are needed to reduce these inequities and ensure fair and adequate care across socioeconomic groups. TRIAL REGISTRATION:PROSPERO CRD42018088727.

Dataset Information

The central role of comorbidity in predicting ambulatory care sensitive hospitalizations.

Background

Methods

Results

Conclusion

Publications

The central role of comorbidity in predicting ambulatory care sensitive hospitalizations.

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