Table 1.
Descriptive results for variables.
| Variables | Mean % (S.D.) | Category and Proportion | |
|---|---|---|---|
| Dependent variable | |||
| Self-rated health | \ | \ | 1. very bad (6.37%), 2. not very good (28.78%), 3. Average (34.92%), 4. good (29.93%) |
| Mental health | 3.50 | 3.21 | |
| Independent variable | |||
| Physical activity | |||
| Exercise time/day·hour | 0.37 | 0.41 | 1. ≤0.25 h (49.91%), 2. 0.25–0.5 h (30.88%), 3. >0.5 h (19.21%) |
| Housework time/day·hour | 1.08 | 1.16 | 1. ≤0.5 h (39.08%), 2. 0.5–1 h (27.83%), 3. >1 h (33.08%) |
| Screen time | |||
| TV watching time/day·hour | 1.54 | 1.31 | 1. ≤1 h (43.30%), 2. 1–2 h (32.31%), 3. >2 h (24.39%) |
| Online and game time/day·hour | 1.35 | 1.40 | 1. ≤1 h (52.68%), 2. 1–2 h (26.30%), 3. >2 h (21.02%) |
| Academic burden | |||
| School study time/day·hour | 1.71 | 0.95 | 1. ≤2 h (72.53%), 2. 2–4 h (25.16%), 3. >4 h (2.31%) |
| Off campus study and homework time/day·hour | 1.24 | 1.74 | 1. ≤2 h (76.60%), 2. 2–4 h (16.33%), 3. >4 h (7.07%) |
| Control variable | |||
| Gender | 0. Female (48.12%), 1. Male (51.88%) | ||
| Registered residence | 0. Agricultural household registration (54.02%), 1. Non agricultural household registration (45.98%) | ||
| Maximum education years of parents | 11.09 | 3.10 | \ |
| Whether to live with both parents | \ | \ | 0. No (31.85%), 1. Yes (68.15%) |
| Family economic conditions | \ | \ | 1. Poor (28.43%), 2. Medium (67.16%), 3. Rich (4.41%) |
| Only child | \ | \ | 0. No (55.31%), 1. Yes (44.69%) |
| Degree of introversion (personality) | 5.86 | 2.15 | \ |
| Sleep time | \ | \ | 1. ≤6 h (5.83%), 2. 6–8 h (51.13%), 3. >8 h (43.04%) |
| School residence status | \ | \ | 0. No (69.63%), 1. Yes (30.37%) |