We compared the total number of psychiatric diagnoses by sex using the Mann-Whitney U test, and compared the prevalence of diagnoses by sex with Fisher's exact test. In order to control for testing multiple hypotheses, we assessed the significance of Fisher's exact tests using the Benjamini and Hochberg approach (Benjamini and Hochberg, 1995). Broad disorder categories (substance use, substance-induced, psychotic, mood, anxiety, and other) were tested first, and then subcategories were tested if differences were found (see Table 2). Because of our interest in MA-induced paranoia (Leamon et al., 2010) we used Fisher's exact test to compare MA-induced psychotic disorder with delusions by gender.
