Of the 228 bipolar subjects interviewed at baseline, 121 (53.1%) subjects were successfully re-evaluated at follow-up using the SSAGA (Group 1: 65.0%, n = 13; Group 2: 53.6%; n = 30; Group 3: 58.6%, n = 17; group 4: 63.5%; n = 61). There were no significant differences across groups regarding the rate of persons re-interviewed, nor were there differences across groups regarding age, gender and symptoms during the most severe depressive or manic episode when re-evaluated subjects were compared to those who could not be re-assessed at follow-up. All other individuals did not agree to be re-interviewed, deceased (n = 2) or could not be located due to address change.
