Of the 180 bipolar subjects interviewed at baseline, n = 117 (65.0%) subjects were successfully re-evaluated at follow-up using the SSAGA (Group 1: 62.9%, n = 34; Group 2: 91.3%; n = 21; Group 3: 37.7%, n = 23; group 4: 95.1%; n = 39). There were no statistically significant differences across groups regarding the rate of being re-interviewed, nor were there differences across groups regarding age, gender and number of 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. N = 63 individuals did not agree to be re-interviewed, deceased (n = 2) or could not be located due to address change.
