Although the NCS and NCS-R contain 8098 and 9282 participants, respectively, targeted subsets of each were used to provide full representation of disorders of interest that were present in both samples, to verify if results replicated across both samples. In particular, PTSD, antisocial behavior in the form of conduct disorder, and alcohol and drug problems were available only for subsamples of the NCS and NCS-R. PTSD was assessed in 5877 and 5692 participants of the NCS and NCS-R, respectively. Similarly, in the NCS-R, alcohol and drug problems were assessed only in the subsample with 5692 subjects. Diagnoses of antisocial personality disorder were not a part of the publicly available dataset; however, lifetime diagnoses of conduct disorder were available for a subsample of the NCS-R (N = 3197), ranging from 18-44 years of age. In summary, to permit direct comparison of findings across the two samples, LCAs were performed using subsamples of participants from the NCS and NCS-R (unweighted/weighted Ns = 5,877/5,877 and 3,197/2,980, respectively) who had been assessed for conduct disorder, PTSD and substance use problems, along with other disorders of interest.
