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