Table 1.
Characteristics of the sample at entry by genotypea
| Genotype | l/l (n = 153) | l/s (n = 161) | s/s (n = 89) | Statistics |
|---|---|---|---|---|
| Adversities at entry, n (%) | ||||
| 1 | 19 (12) | 30 (19) | 16 (18) | χ2 = 6.4, d.f. = 6, P = 0.38 |
| 2 | 68 (44) | 81 (50) | 44 (49) | |
| 3 | 49 (32) | 36 (22) | 22 (24) | |
| 4 or more | 17 (11) | 14 (9) | 7 (8) | |
| Gender, n (%) | ||||
| Females | 68 (38) | 67 (37) | 44 (25) | |
| Males | 85 (38) | 94 (42) | 45 (20) | χ2 = 1.42, d.f. = 2, P = 0.49 |
| Age, years: mean (s.d.) | 13.6 (1.2) | 13.8 (1.2) | 13.7 (1.2) | F = 0.46, d.f. = 2,385, P = 0.30 |
| Any emotional disorder, n (%) | 10 (7) | 13 (8) | 3 (3) | χ2 = 1.77, d.f. = 2, P = 0.41 |
| Any behavioural disorder, n (%) | 9 (6) | 3 (2) | 5 (6) | χ2 = 3.92, d.f. = 2, P = 0.141 |
| Depressive symptoms, mean (s.d.) | 17.2 (8.6) | 17.5 (8.9) | 18.4 (9.7) | F = 0.46, d.f. = 2,385, P = 0.63 |
| Subsequent depressive episode, n (%) | 12/135 (9) | 13/152 (9) | 7/80 (9) | χ2 = 0.01, d.f. = 2, P = 1.0 |
l, long; s, short.
a. Individuals with clinical depression episodes at entry were excluded from the study.