Table 1. Means (standard deviations) of main variables overall and by gender.
| Variable | Girls | Boys | Overall Sample |
|---|---|---|---|
| n (%) | 1115 (44.5%) | 1393 (55.5%) | 2508 |
| Age | 14.5 (0.9) | 14.6 (0.9) | 14.5 (0.9) |
| Problem-solving ability | 44.8 (12.2) | 44.8 (13.3) | 44.8 (12.8) |
| Time 1: Depression | 16.8 (11.3) | 10.8 (8.4) | 13.4 (10.2) |
| Time 2: Depression | 15.6 (11.2) | 9.5 (8.4) | 12.3 (10.3) |
| Time 3: Depression | 12.3 (11.3) | 7.8 (8.4) | 9.9 (10.1) |
| Time 1: Anxiety | 22.1 (8.7) | 17.8 (7.9) | 19.7 (8.5) |
| Time 2: Anxiety | 21.1 (9.0) | 16.7 (8.4) | 18.7 (8.9) |
| Time 3: Anxiety | 17.8 (10.3) | 14.2 (8.9) | 15.9 (9.7) |