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Table 3 Longitudinal association of change in bedroom media with change in sedentary time and self-reported screen-time

From: Bedroom media, sedentary time and screen-time in children: a longitudinal analysis

  

Sedentary time (n = 283)*

 

Screen-time (n = 357)†

Variable

n

β (95% CI)

P

n

β (95% CI)

P

Television

        

Constantly absent

90

Ref

  

112

Ref

  

Constantly present

86

1.39

(−0.79, 3.57)

0.21

113

4.17

(0.18, 8.15)

0.04

T 0 absent – T 4y present

36

−0.57

(−3.25, 2.1)

0.68

38

3.59

(−1.89, 9.07)

0.20

T 0 present – T 4y absent

71

0.59

(−1.64, 2.82)

0.61

94

0.82

(−3.38, 5.01)

0.70

Computer

        

Constantly absent

164

Ref

  

196

Ref

  

Constantly present

23

0.49

(−2.56, 3.54)

0.75

32

1.96

(−3.51, 7.43)

0.48

T 0 absent – T 4y present

58

1.64

(−0.48, 3.75)

0.13

84

2.08

(−1.68, 5.83)

0.28

T 0 present – T 4y absent

38

0.53

(−2.97, 1.91)

0.67

45

−8.02

(−12.75, −3.29)

<0.01

Combined bedroom media

        

Stable

126

Ref

  

155

Ref

  

Decrease

80

−0.43

(−2.39, 1.53)

0.67

102

−1.88

(−5.62, 1.87)

0.33

Increase

77

0.49

(−1.51, 2.49)

0.63

100

2.57

(−1.2, 6.35)

0.18

  1. Ref, reference group.
  2. Models adjusted for clustering in schools, sex, age, body mass index, socio-economic status and urban/rural location.
  3. *Outcome variable: Change in weekly proportion of wear time spent sedentary T4y-T0; Beta coefficient (95% CI)*100.
  4. †Outcome variable: Change in weekly hours of self-reported screen-time T4y-T0; Beta coefficient (95% CI).