The measures of past suicidal behaviors, which have consistently been found to predict future suicide attempts,27, 28 include information about history of ideation, plans and attempt. Respondent 12-month DSM-IV disorders, finally, were assessed using Version 3.0 of the WMH Composite International Diagnostic Interview (CIDI) 36 a fully-structured research diagnostic interview. The assessment included the vast majority of the disorders documented to predict suicide attempts in previous studies,7, 8, 22–26 including anxiety disorders (panic disorder, agoraphobia without a history of panic disorder, generalized anxiety disorder, specific phobia, social phobia, post-traumatic stress disorder, adult separation anxiety disorder), mood disorders (major depressive disorder, dysthymic disorder, bipolar disorder), externalizing disorders (adult attention-deficit/hyperactivity disorder, oppositional-defiant disorder, conduct disorder, intermittent explosive disorder), and substance disorders (alcohol and illegal drug abuse and dependence). Clinical reappraisal studies carried out in conjunction with a number of WMH surveys documented generally good concordance between DSM-IV diagnoses based on the CIDI and diagnoses based on blinded clinical reappraisal interviews with the Structured Clinical Interview for DSM–IV41 in probability sub-samples of WMH respondents.42 Organic exclusion rules and diagnostic hierarchy rules were used in making all respondent diagnoses.
