The NCS and NCS-R are two nationally representative surveys (Ns= 8098 and 9282, respectively) of mental health diagnoses conducted in the United States between 1990-1992 and 2001-2002, respectively, with response rates of 82.6% and 70.9%. Subjects in both surveys consist of noninstitutionalized participants (NCS age range: 15 – 54; NCS-R age range: 18 – 99). Further details regarding the recruitment, consent, and sampling strategy have been documented elsewhere [17-21].
