Trauma exposure was defined using the Semi‐Structured Assessment for the Genetics of Alcoholism (SSAGA‐IV) interview, which consists of questions regarding potentially traumatic life events involving physical and sexual violence, witnessing violence, and witnessing natural disasters and accidents. Consistent with previous studies (Bender et al., 2016; McCutcheon et al., 2017; Meyers et al., 2019), three types of traumatic exposures were considered: nonsexual assaultive, nonassaultive, and sexual assaultive trauma. These were lifetime binary variables (0 = no; 1 = yes). Nonsexual assaultive trauma was defined as having been shot, stabbed, mugged or threatened with a weapon, kidnaped, or held captive and/or tortured. Nonassaultive trauma was defined as unexpectedly discovering a dead body, experiencing a natural disaster, or experiencing a life‐threatening accident. Sexual assaultive trauma was defined as being raped or otherwise sexually assaulted by a relative or nonrelative. DSM‐IV PTSD symptom counts were recorded if an individual endorsed one or more traumatic experiences. A maximum endorsement of 17 symptoms were possible in for the three PTSD symptom criteria defined by the DSM‐IV: five re‐experiencing symptoms, seven avoidance symptoms, and five arousal symptoms
