The SSAGA telephone interview assessed lifetime history of suicide ideation, hereafter referred to as suicidality [Statham et al., 1998]. Details of both the ordinal scale used in the regression analyses and the IRT items (all yes/no) are presented in Table I. One or more items were endorsed by 25% of males and 24% of females. As with ClinDep, we exclude participants whose onsets of suicidality occur before SLE reporting.
