Table 4.
Follow-up analyses examining the effect of dose on intervention outcomes
|
Outcome variable |
Total df |
Estimate |
SE |
t-value |
p-value |
|---|---|---|---|---|---|
| Predictor variables1 | |||||
| Child BMI z-score (post) |
|
|
|
|
|
| BMI z-score (pre) |
133 |
0.71 |
0.058 |
12.09 |
<.0001 |
| Dose |
|
0.01 |
0.05 |
0.137 |
0. 89 |
| Child sedentary time (post) |
|
|
|
|
|
| Sedentary time (pre) |
81 |
0.63 |
0.10 |
6.49 |
<.0001 |
| Dose |
|
-0.20 |
0.30 |
-0.66 |
0.51 |
| Child moderate PA (post) |
|
|
|
|
|
| Moderate PA (pre) |
81 |
0.72 |
0.08 |
8.68 |
<.0001 |
| Dose |
|
0.08 |
0.09 |
0.86 |
0.39 |
| Child TV viewing time (post) |
|
|
|
|
|
| TV time (pre) |
127 |
0.66 |
0.05 |
12.56 |
<.0001 |
|
Dose |
|
-16.59 |
2.73 |
-6.08 |
<.0001 |
| Child energy intake (post) |
|
|
|
|
|
| Energy intake (pre) |
49 |
0.83 |
0.10 |
8.67 |
<.0001 |
|
Dose |
|
-48.92 |
28.35 |
-1.73 |
0.09 |
| Parent support of PA (post) |
|
|
|
|
|
| Support of PA (pre) |
144 |
0.66 |
0.06 |
11.35 |
<.0001 |
|
Dose |
|
0.06 |
0.02 |
2.74 |
.006 |
| Parent self efficacy to offer healthy foods (post) |
144 |
|
|
|
|
| Self efficacy (pre) |
|
0.51 |
0.05 |
10.51 |
<.0001 |
|
Dose |
|
0.05 |
0.02 |
2.84 |
0.005 |
| Parent offering fruit and vegetables (post) |
|
|
|
|
|
| Offering fruit and vegetables (pre) |
144 |
0.72 |
0.05 |
12.89 |
<.0001 |
| Dose | 0.10 | 0.05 | 1.89 | 0.06 | |
[1] The variable of interest at pre intervention and intervention dose were regressed onto the variable of interest at post intervention. Dose effects were only examined for outcomes for which significant intervention effects were identified.