Table 1 Baseline characteristics of study sample (mean ± SD; unless specified)
| Intervention | Wait-list Control | Whole sample | |
|---|---|---|---|
| Age (years) | 13.8 (0.4) | 13.7 (0.4) | 13.7 (0.4) |
| Female students (%) | 48.6 | 56.4 | 52.3 |
| Moderate- to vigorous-intensity physical activity (min/d) | 36.6 (19.3) | 39.1 (18.4) | 37.8 (18.9) |
| Self-reported physical activity (days) | 2.8 (1.8) | 2.8 (1.7) | 2.8 (1.8) |