Offspring data obtained from telephone administration of the adapted SSAGA (Bucholz et al., 1994) were used to derive DSM-IV lifetime diagnoses of major depression, conduct disorder, panic disorder, social phobia and generalized anxiety disorder, alcohol abuse or dependence, marijuana abuse or dependence, and nicotine dependence. Due to the low prevalence of specific anxiety disorders, (i.e., panic disorder, generalized anxiety disorder, and social phobia), these disorders were combined into one variable representing anxiety disorders.
