TABLE 2

Infant Weight Measures

Incentive, Mean (SD)Control, Mean (SD)Difference in Mean Weights (SD) (95%CI)PEffect Size (95% CI)
1 mo3772.0 (767.2)4223.3 (1150.7)−451.3 (977.9) (–1117.4 to 214.8).13−0.46 (–1.16 to 0.24)
3 mo5503.2 (782.3)5884.9 (1016.1)−381.7 (903.2) (–1010.2 to 246.8).23−0.42 (–1.14 to 0.30)
6 mo7610.3 (950.5)7726.4 (1294.1)−116.2 (1130.2) (–904.5 to 672.2).80−0.10 (–0.81 to 0.61)