Table 1 Screen time, exercise time, and psychological symptoms of Chinese adolescents
Items | Boys | Girls | Total |
|---|---|---|---|
Sample size | 3600 | 3600 | 7200 |
Age(years) | 15.50 ± 1.71 | 15.50 ± 1.71 | 15.50 ± 1.71 |
Screen time (h/d), N (%) | |||
<1 | 1792 (49.8) | 1906 (52.9) | 3698 (51.4) |
1–2 | 1108 (30.8) | 1186 (32.9) | 2294 (31.9) |
>2 | 700 (19.4) | 508 (14.1) | 1208 (16.8) |
Exercise time (min/d), N (%) | |||
<30 | 1311 (36.2) | 2044 (56.8) | 3355 (46.6) |
30–60 | 1551 (43.1) | 1270 (35.3) | 2821 (39.2) |
>60 | 738 (20.5) | 286 (7.90) | 1024 (14.2) |
Psychological symptoms, N (%) (%) | |||
Emotional symptoms | 1001 (27.8) | 994 (27.6) | 1995 (27.7) |
Behavioral symptoms | 1021 (28.4) | 955 (26.5) | 1976 (27.4) |
Social adaptation difficulties | 656 (18.2) | 577 (16.0) | 1233 (17.1) |
Psychological symptoms | 797 (22.1) | 743 (20.6) | 1540 (21.4) |