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NIH Public Access Author Manuscript Psychol Med. Author manuscript; available in PMC 2007 July 18.

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Published in final edited form as: Psychol Med. 2006 January ; 36(1): 57–68.

Specifying Race-Ethnic Differences in Risk for Psychiatric Disorder in a US National Sample Joshua Breslau, Ph.D. Sc.D.1, Sergio Aguilar-Gaxiola, M.D., Ph.D.3, Kenneth S. Kendler, M.D. 2, Maxwell Su, Ph.D.1, David Williams, Ph.D.4, and Ronald C. Kessler, Ph.D.1 1 Department of Health Care Policy, Harvard Medical School, Medical College of Virginia/Virginia Commonwealth University 2 Departments of Psychiatry and Human Genetics, Medical College of Virginia/Virginia Commonwealth University 3 Department of Psychology, California State University, Fresno 4 Department of Sociology and Institute for Social Research, University of Michigan

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Abstract Background—Epidemiological studies have found lower than expected prevalence of psychiatric disorders among disadvantaged race-ethnic minority groups in the United States. Recent research shows that this is due entirely to reduced lifetime risk of disorders, as opposed to persistence. Specification of race-ethnic differences with respect to clinical and social characteristics can help identify the protective factors that lead to lower lifetime risk among disadvantaged minority groups. Methods—Data on 5,424 Hispanics, Non-Hispanic Blacks, and Non-Hispanic Whites came from the National Comorbidity Survey Replication (NCSR), a nationally representative survey conducted with the World Mental Health version of the Composite International Diagnostic Interview (WMHCIDI). Race-ethnic differences in risk of disorders were compared across specific diagnoses, ages of onset, cohorts and levels of education.

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Results—Both minority groups had lower risk for common internalizing disorders: depression, GAD, and social phobia. In addition, Hispanics had lower risk for dysthymia, ODD and ADHD; Non-Hispanic Blacks had lower risk for panic disorder, substance use disorders and early onset impulse control disorders. Lower risk among Hispanics, relative to Non-Hispanic Whites, was found only among the younger cohort (age