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Table 3 Binary logistic regression analysis of psychological symptoms of Chinese adolescents by screen and exercise time

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

Gender Variable Group Emotional symptoms Behavioral symptoms Social adaption difficulties Psychological symptoms
OR(95%CI) P OR(95%CI) P value OR(95%CI) P value OR(95%CI) P
Boys Scree time (h/d) <1 1.24 (1.05–1.47) 0.01 1.07 (0.90–1.26) 0.46 1.16 (0.95–1.41) 0.15 1.13 (0.94–1.36) 0.20
1–2 1   1   1   1  
  >2 1.29 (1.04–1.59) 0.02 1.53 (1.25–1.88) < 0.001 1.46 (1.15–1.86) < 0.001 1.34 (1.07–1.68) 0.01
Exercise time (min/d) <30 1.65 (1.40–1.94) < 0.001 1.31 (1.11–1.54) < 0.001 1.60 (1.32–1.93) < 0.001 1.54 (1.29–1.84) < 0.001
30–60 1   1   1   1  
  >60 0.99 (0.81–1.22) 0.95 1.07 (0.88–1.30) 0.52 0.95 (0.74–1.21) 0.67 1.00 (0.80–1.25) 0.98
Girls Scree time (h/d) <1 1.09 (0.92–1.28) 0.32 1.22 (1.03–1.45) 0.02 1.22 (1.00–1.50) 0.05 1.12 (0.93–1.34) 0.23
1–2 1   1   1   1  
  >2 1.43 (1.14–1.79) < 0.001 1.43 (1.13–1.80) < 0.001 1.41 (1.07–1.86) 0.01 1.40 (1.09–1.80) 0.01
Exercise time (min/d) <30 1.70 (1.45–2.01) < 0.001 1.45 (1.23–1.70) < 0.001 1.92 (1.56–2.36) < 0.001 1.84 (1.53–2.22) < 0.001
30–60 1   1   1   1  
  >60 1.61 (1.21–2.14) < 0.001 1.42 (1.07–1.90) 0.02 1.51 (1.05–2.17) 0.03 1.64 (1.19–2.25) < 0.001
Total Scree time (h/d) <1 1.16 (1.03–1.31) 0.02 1.14 (1.01–1.29) 0.03 1.19 (1.03–1.37) 0.02 1.12 (0.99–1.28) 0.08
1–2 1   1   1   1  
  >2 1.34 (1.15–1.56) < 0.001 1.51 (1.29–1.76) < 0.001 1.46 (1.22–1.75) < 0.001 1.38 (1.17–1.63) < 0.001
Exercise time (min/d) <30 1.63 (1.46–1.83) < 0.001 1.34 (1.19–1.50) < 0.001 1.65 (1.44–1.89) < 0.001 1.62 (1.43–1.83) < 0.001
30–60 1   1   1   1  
  >60 1.17 (0.99–1.38) 0.06 1.20 (1.02–1.41) 0.03 1.14 (0.93–1.40) 0.20 1.21 (1.01–1.45) 0.04