Study 1 (n = 40) | Study 2 (n = 146) | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|

Mean (SD) or %^{b} | Model-based inference^{a} | Mean (SD) or %^{b} | Model-based inference^{a} | |||||||||

Not adjusted for baseline BSR | Adjusted for baseline BSR | Not adjusted for baseline BSR | Adjusted for baseline BSR | |||||||||

Intrv N = 19 | Ctrl N = 21 | Effect^{c} (95%CI) | P | Effect^{a} (95%CI) | P | Intrv N = 106 | Ctrl N = 40 | Effect^{c} (95%CI) | P | Effect^{a} (95%CI) | P | |

BMI z | 0.61 (1.23) | 1.34 (1.12) | −0.79 (–1.57, 0.003) | .05 | –0.47 (–1.22, 0.28) | .22 | 0.66 (0.98) | 1.17 (1.04) | –0.53 (–0.91, –0.16) | .006 | –0.31 (–0.62, –0.0007) | .05 |

BSR | 4.68 (2.02) | 6.05 (1.64) | −1.42 (–2.64, –0.21) | .02 | –0.95 (–2.13, 0.23) | .11 | 4.55 (0.97) | 5.30 (1.12) | –0.75 (–1.16, –.34) | <.001 | –0.56 (–0.93, –0.19) | .003 |

BMI ≥95 | 21% | 39% | 0.40 (0.08, 2.01) | .27 | 0.74 (0.10, 5.26) | .76 | 24% | 54% | 0.27 (0.11, 0.63) | .002 | 0.34 (0.11, 1.04) | .06 |

BSR ≥6 | 22% | 54% | 0.24 (0.05, 1.15) | .07 | 0.35 (0.06, 1.88) | .22 | 15% | 49% | 0.18 (0.07, 0.45) | <.001 | 0.19 (0.07, 0.53) | .002 |

Baseline values for BSR were as follows: Study 1: intervention M = 4.83 (0.74), control M = 5.35 (1.20); Study 2: intervention M = 4.37 (1.23), control M = 4.86 (0.85). Baseline values for BSR ≥6 were as follows: Study 1: 16.7% of intervention, 38.1% of control; Study 2: 13.0% of intervention, 13.2% of control. P values for all contrasts >.05. CI, confidence interval; Ctrl, control; Intrv, intervention.

↵a Analyses in Study 1 controlled for pubertal development and child age at follow-up (due to the broad range) and analyses in Study 2 took into account the hierarchical nature of the data (ie, participants were nested within schools). In Study 2, the intervention-by-gender interaction was nonsignificant for BMI and BSR (

*P*’s > .50).↵b Means and SDs for the continuous variables (BMI and BSR); percent obese for the indicator variables (BMI ≥95% and BSR ≥6).

↵c For the continuous variables, intervention effect is the difference between the means for the 2 groups (intervention minus control); for the indicator variables, intervention effect is the odds ratio for obesity (intervention versus control).