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Table 1 Screen time, exercise time, and psychological symptoms of Chinese adolescents

From: Psychological symptoms are associated with screen and exercise time: a cross-sectional study 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)