For each of the 20 DSM-5 PTSD symptoms endorsed, a series of follow-up questions was presented. These obtained information about symptom recency; for symptoms present during the past month, participants were asked how much they had been bothered by the symptom during that month based on a 5-point scale (1 = Not at all, 5 = Extremely). For symptoms that referenced traumatic events (i.e., symptoms B1, 2, 3, 4, and 5; C1 and 2; D1 and D3), the first follow-up question determined which event type(s) were incorporated in the symptom content (e.g., what event or events were involved in the content of nightmares). For remaining PTSD symptoms not referencing specific events, the first follow-up question asked if the symptom began or got worse following an event or events. If they responded yes, they were asked which event type(s) occurred before the symptom began or got worse. Participants endorsing symptoms with content related to and/or onset or worsening following a stressor event were then presented with the abbreviated list of 14 event types described above, and asked to indicate which event type(s), if any, were related to symptoms. Selection of more than one event type was allowed.
