Retrospective AOO reports were based on a question series designed to avoid the implausible response patterns obtained in using the standard Composite International Diagnostic Interview [CIDI] AOO question [32]. Experimental research shows this question sequence yields responses with much more plausible AOO distributions than the standard Composite International Diagnostic Interview [CIDI] AOO question [33]. Although AOO questions were asked both about important symptoms (e.g., first panic attack) and full syndromes, the ages used here are for first use of each drug.