Table 2

Proportion of women meeting the postpartum weight goals with ORs estimating differences between conditions and mean changes in weight from pregravid to postpartum with mean differences between conditions: the GEM trial

Primary analysisSensitivity analysis
Measured postpartum weightsMeasured or self-reported postpartum weightsMeasured or imputed postpartum weights
InterventionUsual careInterventionUsual care
n% meeting weight goalsn% meeting weight goalsOR (95% CI)P value*n% meeting weight goalsn% meeting weight goalsOR (95% CI)P value*OR (95% CI)P value*
Average effect of intervention1,0511,1701.28 (1.10, 1.47)<0.011,0751,1871.23 (1.08, 1.39)<0.011.25 (1.11, 1.42)<0.01
6 weeks postpartum1,00025.51,12922.41.17 (1.01, 1.36)0.041,05025.01,15622.71.16 (1.00, 1.34)0.051.18 (0.98, 1.44)0.09
6 months postpartum76430.687523.91.45 (1.14, 1.83)<0.0192231.61,04525.41.37 (1.13, 1.67)<0.011.33 (1.09, 1.62)0.01
12 months postpartum67633.074428.01.25 (0.96, 1.62)0.0989033.596730.21.16 (0.95, 1.41)0.141.24 (0.97, 1.59)0.08
nMean weight (SD)nMean weight (SD)Adjusted mean weight condition difference (95% CI)P value*nMean weight (SD)nMean weight (SD)Adjusted mean weight condition difference (95% CI)P value*Adjusted mean weight condition difference (95% CI)P value*
Average effect of intervention1,0511,170−0.29 (−0.69, 0.11)0.161,0751,187−0.26 (−0.65, 0.13)0.19−0.24 (−0.67, 0.19)0.28
6 weeks postpartum1,0000.64 (5.57)1,1290.75 (5.46)−0.21 (−0.64, 0.23)0.351,0500.64 (5.53)1,1560.71 (5.44)−0.20 (−0.63, 0.22)0.35−0.19 (−0.63, 0.26)0.41
6 months postpartum7640.39 (5.55)8750.95 (5.47)−0.64 (−1.13, −0.14)0.019220.17 (5.46)1,0450.64 (5.54)−0.55 (−1.02, −0.09)0.02−0.51 (−0.99, −0.02)0.04
12 months postpartum6760.20 (5.84)7440.50 (5.43)−0.43 (−0.98, 0.11)0.128900.01 (5.81)9670.15 (5.73)−0.32 (−0.82, 0.19)0.22−0.35 (−0.98, 0.29)0.28
  • *P value for condition differences; P values for treatment × follow-up time point interaction >0.05.

  • †Adjusted for pregravid weight.