Lifetime and 12 Months Prevalence Estimates from the NCS-R and NCS-A:
NCS-R Lifetime prevalence estimates
NCS-R Twelve-month prevalence estimates
NCS-A Lifetime and 12M prevalence estimates
About the National Comorbidity Survey (NCS) Family
The NCS (baseline)
The baseline NCS, fielded from the fall of 1990 to the spring of 1992, was the first nationally representative
mental health survey in the U.S. to use a fully structured research diagnostic interview to assess the
prevalences and correlates of DSM-III-R disorders.
In 2001-02, respondents of the baseline NCS were reinterviewed (NCS-2) to study patterns and predictors of the
course of mental and substance use disorders and to evaluate the effects of primary mental disorders in
predicting the onset and course of secondary substance disorders.
In conjunction with the NCS-2, an NCS Replication survey