Table 1.
Hierarchical Logistic Regressions Predicting Likelihood of Conversion to Bipolar II Disorder Among Participants with Cyclothymia or BiNOS (n = 57) Controlling for Length of Follow-up, Initial Depressive and Hypomanic/Manic Symptoms, and Treatment-Seeking Status
| Predictor | Wald | p | OR | 95% CI |
|---|---|---|---|---|
| Age at Onset | 0.001 | .974 | 1.002 | 0.894 – 1.122 |
| Fam Hx BSD | 1.610 | .204 | 2.987 | 0.551 – 16.191 |
| BIS | 0.208 | .649 | 1.037 | 0.888 – 1.210 |
| BAS-T | 3.445 | .063 | 1.119 | 0.994 – 1.261 |
| BAS-Drive | 0.943 | .331 | 1.131 | 0.882 – 1.451 |
| BAS-FS | 5.345 | .021 | 1.401 | 1.053 – 1.865 |
| BAS-RR | 1.486 | .223 | 1.211 | 0.890 – 1.649 |
| IN | 0.909 | .340 | 1.052 | 0.947 – 1.169 |
Odds ratios (OR) less than 1.0 indicate a negative association between the predictor and conversion to bipolar II disorder. CI = Confidence Interval; Fam Hx BSD = family history of bipolar spectrum disorder; BIS = Behavioral Inhibition System scores; BAS-T = Behavioral Approach System – Total scores; BAS-Drive = BAS Drive subscale; BAS-FS = BAS Fun-Seeking subscale; BAS-RR = BAS Reward Responsiveness subscale; IN = Impulsive Nonconformity Scale.