Skip to main content

Table 2 Descriptives for screen behaviours, main intervention effects in all and by weight status and gender

From: Post-intervention effects on screen behaviours and mediating effect of parental regulation: the HEalth In Adolescents study – a multi-component school-based randomized controlled trial

 

Baselinea

Post-intervention

  
 

Control (n = 908)

Intervention (n = 510)

Control (n = 908)

Intervention (n = 510)

Main intervention effect

p

 

Mean (SD)

Mean (SD)

Mean (SD)

Mean (SD)

c-coeff (95% CI)

 

Weekday TV-viewing b,d

      

All

1.45 (0.99)

1.47 (1.08)

1.70 (1.06)

1.63 (1.15)

-0.08 (-0.19, 0.04)

.18

Normal weight

1.39 (0.93)

1.48 (1.08)

1.66 (1.03)

1.58 (1.10)

-0.12 (-0.24, -0.01)

.04

Overweight

1.82 (1.21)

1.64 (1.15)

1.90 (1.16)

2.07 (1.39)

0.22 (-0.17, 0.62)

.26

Weekend TV-viewing e

      

All

2.15 (1.19)

2.25 (1.29)

2.47 (1.23)

2.40 (1.27)

-0.12 (-0.25, 0.01)

.07

Weekday comp/game-use b,f

      

All

1.13 (0.92)

1.07 (0.92)

1.37 (1.04)

1.32 (1.02)

-0.01 (-0.12, 0.11)

.93

Normal weight

1.09 (0.89)

1.05 (0.87)

1.36 (1.03)

1.28 (0.99)

-0.04 (-0.16, 0.08)

.49

Overweight

1.38 (1.02)

1.31 (1.16)

2.00 (1.21)

1.71 (1.20)

0.27 (-.0.10, 0.62)

.15

Weekend comp/game-use b,g

      

All

1.51 (1.10)

1.53 (1.12)

1.82 (1.17)

1.78 (1.20)

-0.06 (-0.18, 0.06)

.36

Girls

1.24 (1.00)

1.20 (0.95)

1.68 (1.12)

1.51 (1.09)

-0.15 (-0.32, 0.03)

.09

Boys

1.75 (1.14)

1.84 (1.19)

1.94 (1.19)

2.05 (1.24)

0.02 (-0.16, 0.20)

.83

  1. c-coeff: c-coefficient; Comp/game: computer/game-use; SD: standard deviation.
  2. TV-viewing and comp/game-use reported as hours/day.
  3. aBaseline differences for screen behaviours were tested with independent t-test; no significant differences were found.
  4. bSubgroup analyses based on preceding significant interaction analyses by gender or weight status.
  5. Effect analyses for the whole sample for TV-viewing were adjusted for weight status and parental education level.
  6. Effect analyses for the whole sample for computer/game-use were adjusted for gender, weight status and parental education level.
  7. n varies for the different behaviours:
  8. dn in analyses for Weekday TV-viewing: All = 1299; normal weight =1130; overweight = 169.
  9. en in analyses for Weekend TV-viewing: All = 1281.
  10. fn in analyses for Weekday comp/game-use: All = 1286; normal weight = 1119; overweight = 167.
  11. gn in analyses for Weekend comp/game-use: All = 1272; girls = 618; boys = 654.