Frequencies of 9/11 exposure, substance and psychiatric disorders are shown in Table 2. Rates of disorders that began after 9/11 ranged from 0.4% (CD) to 13.7% (ND). All disorder pairs were significantly correlated (tetrachoric correlations (r), 0.04–0.35), except GAD and ASPD. Regarding childhood maltreatments, 35.9% experienced at least one form of maltreatment. Over one-third (35.2%) of individuals reported a parental history of at least one form of psychopathology. Childhood maltreatment factors and parental histories of problems were correlated (r: 0.07–0.26), with the lowest correlations between emotional neglect and parental history of drug use (r = 0.07) and depression (r = 0.09), and the highest correlations between emotional abuse and parental alcohol problems (r = 0.21) and antisocial behavior (0.26).
