Among participants in the intervention group, 63.9% had a weight at 18 months that was at or lower than their baseline weight, as compared with 49.2% of those in the control group. The percentage of participants who lost at least 5% of their baseline weight was 37.8% in the intervention group, as compared with 22.7% in the control group. At 18 months, the net difference in change in BMI for participants in the intervention group, as compared with those in the control group, was −1.1 (95% CI, −1.8 to −0.5)