Table 1. Characteristics of the participants.
| Total (n = 1,632) | |
| n (%) | |
| Sex, female | 818 (50.1) |
| Grade | |
| 1 | 278 (17.0) |
| 2 | 271 (16.6) |
| 3 | 271 (16.6) |
| 4 | 240 (14.7) |
| 5 | 282 (17.3) |
| 6 | 290 (17.8) |
| Sleeping hours, hours | |
| <8 | 340 (20.8) |
| 8–9 | 942 (57.7) |
| ≥9 | 350 (21.4) |
| Screen time, hours | |
| <1 | 258 (15.8) |
| 1–2 | 742 (45.5) |
| ≥2 | 632 (38.7) |
| Physical activity | |
| Very often | 455 (27.9) |
| Often | 732 (44.9) |
| Rarely or almost never | 445 (27.3) |
| Family members, only parent(s) | 1074 (65.8) |
| Maternal employment status, employed | 1391 (85.2) |
| Family affluence, not affluent | 406 (24.9) |
| Paternal BHPS | |
| Good (6–7) | 356 (21.8) |
| Moderate (4–5) | 711 (43.6) |
| Poor (0–3) | 565 (34.6) |
| Maternal BHPS | |
| Good (6–7) | 445 (27.3) |
| Moderate (4–5) | 894 (54.8) |
| Poor (0–3) | 293 (18.0) |
BHPS, Breslow’s seven health practice score.