Table 1.
Clinical characteristics of the sample
| Samples | Statistics | |||
|---|---|---|---|---|
| MDD | BP I | BP II | ||
| N | 61 | 59 | 43 | |
| Male/female | 25/36 | 35/24 | 24/19 | X2(2) = 4.17, p = .11 |
| Mean age (SD) | 35.60 (12.35) | 35.12 (10.35) | 36.00 (15.21) | F(2, 160) = 0.06, p = .94 |
| Clinical state during interview: | ||||
| Recovery | 34/61 (56%) | 34/59 (58%) | 21/43 (49%) | X2(2) = 0.83, p = .66 |
| MDD | 26/61 (43%) | 23/59 (39%) | 18/43 (42%) | X2(2) = 1.07, p = .59 |
| Mania | 0/61 (0%) | 5/59 (8%) | 0/43 (0%) | X2(2) = 9.10, p = .01 |
| Hypomania | 1/61 (2%) | 3/59 (5%) | 5/43 (12%) | X2(2) = 1.46, p = .48 |
| Age at onset of illness (years: M (SD) | 32.63 (10.92) | 29.74 (8.89) | 31.00 (11.09) | F(2, 160) = 1.19, p = .31 |
| Duration of illness (years: M (SD) | 3.78 (3.99) | 5.34 (4.23) | 6.39 (6.14) | F(2, 160) = 4.04, p = .02 |
| Number of affective episodes | 1.74 (0.87) | 2.36 (1.24) | 3.65 (1.60) | F(2, 160) = 30.76, p = .00 |
MDD = Major Depressive Disorder; BP I = bipolar disorder I; PB II = bipolar disorder II; M = mean; SD = standard deviation