The Wave 3 of the NESARC survey included questions regarding the presence of 16 stressful events occurring in the last 12 months prior to the Wave 3 interview. Items assessed whether participants experienced stress related to moving, job loss or instability, loss of relationships (divorce and death), interpersonal conflict, financial difficulties, legal difficulties, or being a victim of a crime (e.g., During the last 12 months, did you move or have anyone new come to live with you?; During the last 12 months, were you fired or laid off from a job?; During the last 12 months, have you been homeless?). The total number of stressful life events was calculated based on answers to the 16 stressful event questions (see Table 1 for the full list of questions included in the NESARC survey to assess the presence of stressful life events). Given that the distribution of stressful life events was positively skewed, we used a median split to create two groups (zero or one event vs. two or more events). Prior work assessing stressful life events has utilized a median
