Table 2. Change in weight and BMI from baseline and from postpartum weight in the entire cohort and the cohort unaffected by the COVID-19 pandemic*.
| All Participants | Participants unaffected by COVID | |||||
|---|---|---|---|---|---|---|
| Mean weight change (95%CI) | Mean weight change (95%CI) | |||||
| Variable | Mean (SD) at Baseline | Month 6† | Month 12†† | Mean (SD) at Baseline | Month 6§ | Month 12§§ |
| Control Weight (kg) | 87.5 (15.6) | -0.5 (-2.5 to 1.4) (p = 0.60) | -1.8 (-3.8 to 0.3) (p = 0.09) | 89.4 (14.4) | -0.4 (-2.6 to 1.9) (p = 0.75) | -1.3 (-3.7 to 1.1) (p = 0.30) |
| Intervention Weight (kg) | 87.5 (14.6) | -1.6 (-3.1 to -0.1) (p = 0.0359) | -2.8 (-4.2 to -1.4) (p = 0.0002) | 87.0 (16.0) | -2.3 (-4.0 to -0.6) (p = 0.0088) | -4.3 (-6.0 to -2.6) (p < 0.0001) |
| Mean difference between groups (kg), (p value) | -1.1 (-3.5 to 1.4) (p = 0.40) | -1.0 (-3.5 to 1.5) (p = 0.42) | -2.0 (-4.7 to 0.8) (p = 0.17) | -3.0 (-5.9 to -0.1) (p = 0.0451) | ||
| BMI Change | BMI Change | |||||
| Mean (SD) at Baseline | Month 6† | Month 12†† | Mean (SD) at Baseline | Month 6§ | Month 12§§ | |
| Control BMI (kg/m2) | 32.4 (4.6) | - 0.1 (-0.8 to 0.6) (p = 0.76) | -0.5 (-1.3 to 0.3) (p = 0.20) | 33.1 (4.5) | -0.0 (-0.9 to 0.8) (p = 0.93) | -0.5 (-1.4 to 0.4) (p = 0.28) |
| Intervention BMI (kg/m2) | 32.3 (5.2) | -0.5 (-1.1 to 0.0) (p = 0.0589) | -1.3 (-1.8 to -0.7) (p < 0.0001) | 32.3 (5.4) | -0.8 (-1.5 to -0.2) (p = 0.0148) | -1.6 (-2.3 to -0.9) (p < 0.0001) |
| Mean difference between groups (kg/m2) | -0.4 (-1.3 to 0.5) (p = 0.37) | -0.8 (-1.7 to 0.2) (p = 0.13) | -0.8 (-1.8 to 0.3) (p = 0.16) | -1.1 (-2.2 to 0) (p = 0.0535) | ||
| Weight change from pre-pregnancy weight, mean (95%CI) | Weight change from pre-pregnancy weight, mean (95%CI) | |||||
| Month 6† | Month 12†† | Month 6§ | Month 12§§ | |||
| Control (kg) | 2.9 (0.2 to 5.6) (p = 0.0342) | 1.5 (-1.3 to 4.3) (p = 0.30) | 3.7 (0.6 to 6.9) (p = 0.0211) | 2.7 (-0.7 to 6.0) (p = 0.12) | ||
| Intervention (kg) | 3.8 (1.8 to 5.8) (p = 0.0002) | 2.5 (0.6 to 4.5) (p = 0.0115) | 2.4 (0.0 to 4.8) (p = 0.0485) | 0.57 (-1.8 to 3.0) (p = 0.64) | ||
| Mean difference between groups | 0.9 (-2.4 to 4.3) (p = 0.58) | 1.1 (-2.3 to 4.4) (p = 0.54) | -1.3 (-5.2 to 2.6) (p = 0.51) | -2.1 (-6.2 to 2.0) (p = 0.31) | ||
*Models adjusted for baseline weight/BMI.
†There were data from 61 participants at the 6-month time point, but for the purposes of analysis, the model predicted data for all 81 women
††There were data from 51 participants at the 12-month time point, but for the purposes of analysis, the model predicted data for all 81 women
§There were data from 48 participants at the 6-month time point, but for the purposes of analysis, the model predicted data for all 60 women unaffected by COVID
§§There were data from 45 participants at the 12-month time point, but for the purposes of analysis, the model predicted data for all 60 women unaffected by COVID