Table 1.
The descriptive characteristics of the participants.
| Variables | n (%) or Mean ± SD |
|---|---|
| The location of the school | |
| Huangshi | 790 (62.5) |
| Wuhan | 474 (37.5) |
| Grade | |
| 2–3 | 498 (39.4) |
| 4–6 | 766 (60.6) |
| Gender | |
| Boy | 707 (55.9) |
| Girl | 557 (44.1) |
| Age (years) | 9.81 ± 1.44 |
| 7–9 | 667 (52.8) |
| 10–12 | 567 (44.8) |
| Missing | 30 (2.4) |
| Number of days with >60 min activity every week | |
| 0 | 386 (30.5) |
| 1–2 days | 350 (27.7) |
| >2 days | 528 (41.8) |
| Anxious symptoms for parents | |
| No | 1236 (97.8) |
| Yes | 28 (2.2) |
Abbreviations: SD, standard deviation;%, percentage.