Original ArticleDSM-IV Personality Disorders in the National Comorbidity Survey Replication
Section snippets
Sample
Data are based on the National Comorbidity Survey Replication (NCS-R), a nationally representative, face-to-face household survey of 9282 adults (ages 18+) in the continental United States (Kessler and Merikangas 2004). The NCS-R was carried out by the professional field staff of the Survey Research Center at the Institute for Social Research, University of Michigan, between February 2001 and December 2003. Sampling was based on a multi-stage clustered area probability design. Informed consent
The Prevalence of DSM-IV PDs
Multiple imputation prevalence estimates of IPDE/DSM-IV PDs in the total sample are 5.7%, 1.5%, and 6.0% for Clusters A, B, and C, respectively (Table 2). The MI prevalence estimates of BPD and ASPD are 1.4% and .6%, respectively. These estimates are all slightly lower than the direct estimates obtained in the clinical reappraisal sample. However, the latter are less accurate than the MI estimates, owing to the fact that the clinical reappraisal sample was only a small (n = 214) sub-sample of
Discussion
The finding that roughly one-tenth of United States adults suffer from a diagnosable PD (including those with PD NOS) is broadly consistent with the three earlier United States studies that, although based on less representative samples, used rigorous semi-structured clinical assessments to diagnose PDs in well-characterized non-patient samples. Similar results have been obtained in two European studies (Coid et al 2006, Torgersen et al 2001). A recent report based on a very large United States
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