VOLUME 49 | NUMBER 2 | APRIL 2014
Mental Health and High-Cost Health Care Utilization: New Evidence from Axis II Disorders
Keywords: Axis II disorders;mental health;health care utilization;ED episodes;hospital admissions
Objective: To analyze the associations between Axis II (A2) disorders and two measures of health care utilization with relatively high cost: emergency department (ED) episodes and hospital admissions.
Data Source/Study Setting: Wave I (2001/2002) and Wave II (2004/2005) of the National Longitudinal Survey on Alcohol and Related Conditions (NESARC).
Study Design: A national probability sample of adults. Gender-stratified regression analysis adjusted for a range of covariates associated with health care utilization.
Data Collection: The target population of the NESARC is the civilian noninstitutionalized population aged 18 years and older residing in the United States. The cumulative survey response rate is 70.2 percent with a response rate of 81 percent (N = 43,093) in Wave I and 86.7 percent (N = 34,653) in Wave II.
Principal Findings: Both men and women with A2 disorders are at elevated risk for ED episodes and hospital admissions. Associations are robust after adjusting for a rich set of confounding factors, including Axis I (clinical) psychiatric disorders. We find evidence of a dose–response relationship, while antisocial and borderline disorders exhibit the strongest associations with both measures of health care utilization.
Conclusions: This study provides the first published estimates of the associations between A2 disorders and high-cost health care utilization in a large, nationally representative survey. The findings underscore the potential implications of these disorders on health care expenditures.
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