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Nationally representative general population data are presented on the current, 12-month, and lifetime prevalence ofDSM-III-Rgeneralized anxiety disorder (GAD) as well as on risk factors, comorbidity, and related impairments.

The data are from the National Comorbidity Survey, a large general population survey of persons aged 15 to 54 years in the noninstitutionalized civilian population of the United States.DSM-III-RGAD was assessed by lay interviewers using a revised version of the Composite International Diagnostic Interview.

Generalized anxiety disorder was found to be a relatively rare current disorder with a current prevalence of 1.6% but was found to be a more frequent lifetime disorder affecting 5.1% of the US population aged 15 to 45 years. Generalized anxiety disorder was twice as common among women as among men. Multivariate logistic regression analysis showed that …