Table 2

Change in weight at 18 months follow-up for participants with and without diabetes

Without diabetes (n = 209)With diabetes (n = 82)P value, between group
Mean weight at baseline (SD), lb220.4 (43.8)239.9 (50.4)0.001
Mean weight at 18 months (SD), lb216.5 (47.1)233.8 (50.4)0.007
Mean weight change at 18 months (SE), lb*
 Control−0.8 (2.2)−1.2 (2.7)0.90
 Intervention−5.4 (1.3)−13.7 (3.7)0.04
 Net intervention effect, difference−4.6 (2.6)−12.5 (4.6)0.08
P value, within group0.070.01
% weight change at 18 months (SE), lb*
 Control−0.7 (0.9)−0.6 (1.1)0.91
 Intervention−2.9 (0.7)−6.6 (2.0)0.08
 Net intervention effect, difference−2.2 (1.1)−6.0 (2.3)0.10
P value, within group0.060.008
% achieving 5% weight loss at 18 months, n (%)58 (28.9)26 (33.3)0.46
  • *Longitudinal mixed-effects model based estimates, adjusted for age, sex, and site.