This project is a continuing analysis of the National Comorbidity Survey Replication (NCS-R), a nationally representative US community household survey of mental disorders. The NCS-R was carried out between February 2001 and May 2003, a decade after the original National Comorbidity Survey (NCS). The NCS-R was designed to achieve two specific aims: investigate time trends in prevalence and correlates of mental disorders in comparison with the baseline NCS; and expand the assessment of prevalence and correlates of mental disorders beyond the assessment in the NCS. To these ends, the NCS-R repeated many NCS questions, updated diagnostic assessments based on DSM-IV criteria, expanded the number of disorders assessed, and included many new questions that were not in the NCS.

The current research has four specific aims:

• develop and disseminate a documented public NCS-R dataset archived by the Inter-University Consortium for Political and Social Research (ICPSR) at the University of Michigan;
• complete analyses for the original NCS-R aim of studying time trends in the prevalence and correlates of DSM mental disorders. Although previous retrospective studies suggest that prevalence has been on the rise for decades, the NCS vs. NCS-R comparison will provide the first nationally representative prospective data on the estimated prevalence of clinically significant mental disorders;
• complete analyses for the original NCS-R aim of expanding assessment to address important substantive and methodological issues that were not covered in the baseline NCS;
• continue support for a collaborative agreement that includes two other surveys: a survey of African-Americans and a survey of Latinos and Asian Americans. These two surveys used the same diagnostic interview as the NCS-R. We are currently analyzing the clinical reappraisal data from these surveys.