Skip to main content

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