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Table 4 Interaction of screen time and exercise time on psychological symptoms among Chinese adolescents

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

Classification of interaction Emotional problems Behavioral symptoms Social adaption difficulties Psychological symptoms
OR(95%CI) P OR(95%CI) P OR(95%CI) P OR(95%CI) P
Screen time (h/d) Exercise time (min/d)         
<1 <30 1.73 (1.45–2.07) < 0.001 1.41 (1.18–1.68) < 0.001 1.80 (1.45–2.24) < 0.001 1.62 (1.33–1.97) < 0.001
30–60 1.13 (0.93–1.38) 0.23 1.04 (0.86–1.27) 0.68 1.06 (0.83–1.36) 0.63 1.00 (0.80–1.25) 1.00
>60 1.43 (1.11–1.86) 0.01 1.37 (1.06–1.76) 0.02 1.25 (0.90–1.72) 0.18 1.40 (1.06–1.86) 0.02
1–2 <30 1.64 (1.34–2.02) < 0.001 1.25 (1.02–1.54) 0.03 1.49 (1.16–1.92) < 0.001 1.51 (1.21–1.89) < 0.001
30–60 1   1   1   1  
>60 1.14 (0.86–1.51) 0.37 1.04 (0.79–1.38) 0.79 1.20 (0.85–1.69) 0.30 1.07 (0.78–1.47) 0.66
>2 <30 2.41 (1.91–3.05) < 0.001 2.00 (1.59–2.52) < 0.001 2.45 (1.86–3.21) < 0.001 2.30 (1.79–2.96) < 0.001
30–60 1.25 (0.97–1.61) 0.09 1.37 (1.07–1.76) 0.01 1.39 (1.02–1.88) 0.04 1.25 (0.94–1.65) 0.12
>60 1.29 (0.92–1.82) 1.14 1.63 (1.18–2.24) < 0.001 1.33 (0.88–1.99) 0.17 1.30 (0.90–1.87) 0.17