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Table 2 Mixed effects models on environmental factors of screen time in Chinese boys and girls

From: Correlates of screen time among 8–19-year-old students in China

Factors\Screen Girls Boys
ST model, Beta (95%CI) Weekdays ST model, Beta (95%CI) Weekends ST model, Beta (95%CI) ST model, Beta (95%CI) Weekdays ST model, Beta (95%CI) Weekends ST model, Beta (95%CI)
Media accessibility
 None screen Ref. Ref. Ref. Ref. Ref. Ref.
 One screens 0.16(−0.06,0.39) 0.11(− 0.13,0.35) 0.16(− 0.07,0.38) 0.30(0.08,0.51) 0.14(− 0.08,0.36) 0.31(0.09,0.53)
 Two screens 0.42(0.17,0.68) 0.24(−0.03,0.50) 0.41(0.16,0.67) 0.34(0.09,0.60) 0.30*(0.04,0.56) 0.30*(0.04,0.55)
 Three screens 0.66(0.25,1.07) 0.67(0.25,1.10) 0.52*(0.11,0.93) 0.79(0.42,1.16) 0.68(0.30,1.07) 0.69(0.32,1.07)
p value for trend < 0.005 < 0.05 < 0.05 < 0.001 < 0.001 < 0.005
Presence of parents/others
 Strongly disagree Ref. Ref. Ref. Ref. Ref. Ref.
 Disagree −0.21(−0.45,0.02) −0.29*(− 0.53,-0.04) −0.13(− 0.37,0.10) −0.05(− 0.29,0.18) 0.02(− 0.22,0.26) −0.08(− 0.31,0.16)
 Agree − 0.22*(− 0.43,-0.01) −0.12(− 0.34,0.10) − 0.21*(− 0.42,-0.01) − 0.15(− 0.37,0.06) − 0.11(− 0.33,0.11) −0.15(− 0.36,0.07)
 Strongly agree − 0.35(− 0.60,-0.09) − 0.34*(− 0.61,-0.07) −0.27* (− 0.53,-0.01) −0.32*(− 0.61,-0.03) − 0.24(− 0.53,0.06) −0.30*(− 0.59,-0.01)
p value for trend < 0.001 < 0.05 < 0.001 < 0.001 < 0.05 < 0.005
  1. All models have adjusted for fixed effects factors (age and grade) and random effects factors (school and class).
  2. * p < 0.05, † p < 0.01, ‡ p < 0.001