Table 1 Sample characteristics at baseline, and comparison between those with 13 or less episodes, versus those with more than 13 episodes (n = 108)
Sociodemographics | All 108 subjects | ≤13 episodes** | >13 episodes** | p-value* |
|---|---|---|---|---|
Gender (% female) | 54.6 | 56.6 | 52.8 | 0.696 |
Age at intake (mean in years, SD) | 46.1 (10.0) | 43.5 (10.1) | 48.6 (9.5) | 0.008* |
Educational level: % ≥ high school | 51.4 | 45.3 | 59.6 | 0.141 |
Income (% >20.000 euro/year) | 36.5 | 31.4 | 43.1 | 0.219 |
Unable to work (%) | 50.0 | 50.9 | 49.1 | 0.846 |
Clinical characteristics | ||||
 BD I (% BD I; % BDII = 100-%BDI) | 62.0 | 69.8 | 54.7 | 0.109 |
 Liftetime history of rapid cycling (%) | 17.0 | 5.8 | 26.9 | 0.004* |
 First degree relative with BD (%) | 40.7 | 37.3 | 45.5 | 0.430 |
 Age at onset of BD (mean in years, SD) | 23.8 (9.7) | 25.4 (10.3) | 22.3 (8.7) | 0.097 |
 Duration of BD (mean in years, SD) | 22.3 (11.7) | 18.1 (10.8) | 26.3 (10.9) | <0.001* |
 Current diagnosis alcohol dependence (%) | 20.2 | 13.5 | 26.9 | 0.087 |
 Current daily smoking (%) | 41.7 | 43.4 | 39.6 | 0.693 |
 Current diagnosis drug use/dependence (%) | 3.7 | 1.9 | 5.7 | 0.308 |
 Current diagnosis anxiety disorder (%) | 15.7 | 11.3 | 18.9 | 0.278 |
 Lifetime nr. of mood episodes (median, IQR) | 13.5 (7.0–46.3) | 7.0 (4.5–10.0) | 45.0 (20.0–80.0) | <0.001* |
 Uses any medication in the last month (%) | 92.5 | 90.4 | 94.2 | 0.462 |
 Mean units of alcohol per day at baseline | 2.1 | 2.0 | 2.2 | 0.652 |
 Mean units of tobacco at baseline | 7.3 | 7.6 | 6.8 | 0.722 |