Table 5.
Post hoc analysis of maternal gestational weight gain in women with BMI ≥25 at trial entry by treatment group. Values are number/total available (%) and treatment effects are relative risks based on available data unless otherwise indicated
| Gestational weight gain (kg) | Lifestyle advice | Standard care | Treatment effect (95% CI), P value | |
|---|---|---|---|---|
| Unadjusted | Adjusted* | |||
| Mean (SD) total† | 9.39 (5.74) | 9.44 (5.77) | −0.05 (−0.59 to 0.48), 0.85 | −0.04 (−0.55 to 0.48), 0.89 |
| Mean (SD) average weekly (kg)† | 0.45 (0.28) | 0.45 (0.28) | 0.00 (−0.03 to 0.03), 0.94 | 0.00 (−0.03 to 0.03), 0.99 |
| Below recommendations | 224/897 (25) | 217/871 (25) | 1.00 (0.85 to 1.18), 0.98 | 0.99 (0.84 to 1.15), 0.86 |
| Within recommendations | 293/897 (33) | 286/871 (33) | 0.99 (0.87 to 1.14), 0.94 | 1.02 (0.89 to 1.17), 0.75 |
| Above recommendations | 380/897 (42) | 368/871 (42) | 1.00 (0.90 to 1.12), 0.96 | 0.99 (0.89 to 1.10), 0.85 |
*Adjusted analyses included stratification variables BMI category, parity, and centre. Outcomes derived from birth weight were additionally adjusted for maternal age, socioeconomic status and maternal smoking.
†Treatment effects are differences in means based on available data.