SROs were assessed using parallel questions in the NCS and NCS-2. At the baseline assessment, respondents were asked about lifetime experiences of suicide ideation (“Have you ever seriously thought about committing suicide?”), suicide plans (“Have you ever made a plan for committing suicide?”), and suicide attempts (“Have you ever attempted suicide?”). Because self-administered surveys have been shown to yield higher rates of reporting embarrassing behaviors than interviewer-administered surveys,32 SROs were assessed in a self-administered booklet. Respondents who reported an SRO were asked questions about age of onset and recency. Those who reported a suicide attempt were also presented with three statements and asked to identify the one that best described their experience: “(i) I made a serious attempt to kill myself and it was only luck that I did not succeed; (ii) I tried to kill myself but I knew the method was not fool-proof; (iii) My attempt was a cry for help, I did not want to die.” In line with contemporary distinctions between suicidal and non-suicidal self-injury,33, 34 respondents endorsing statements 1 or 2 were considered to have
