Frequencies and percentages of T1 subject characteristics
| All (n=686) | |
| Sex | |
| Boys | 312 (45.5%) |
| Chronic pain T1≥3 months | |
| Yes | 165 (24.1%) |
| SES mother T1 | |
| High≥Higher education | 286 (41.7%) |
| SES father T1 | |
| High≥Higher education | 242 (35.3%) |
| Sleep onset latency (>30 min) T1 | |
| Yes | 249 (36.3%) |
| Using the ActiGraph in the winter | |
| T1 | 546 (79.6%) |
| HSCL-10 T1 | |
| Over cut-off | 138 (20.1%) |
| HSCL-10 T2 | |
| Over cut-off | 183 (26.7%) |
| MVPA (min/day) | |
| Under 60 min | 594 (86.6%) |
| Age (years) | 16.25 (0.94) |
| Self-reported mean screen time per day* | 4.00 (2.30) |
| Objectively measured sedentary time per day* | 9.58 (2.25) |
| MVPA (minutes per day) | 44.66 (18.06) |
| BMI (kg/m2) | 22.27 (3.95) |
| Self-reported health (scale of 1–5) | 3.94 (0.83) |
| Social network (scale of 1–4) | 3.30 (0.48) |
Time reported in hours per day.
BMI, body mass index; HSCL, Hopkins symptoms checklist; MVPA, Moderate to vigorous physical activity; SES, socioeconomic status; T1, baseline.