Table 2 Comparisons of gestational age and preterm birth between control and exercise groups, PAMELA study
Intention-to-treat analysis | Intervention (n=198a) | Control (n=396a) | p | |
|---|---|---|---|---|
n (%) | 0.73 | OR (95%CI) | ||
Preterm birth | ||||
< 37 weeks | 26 (13.1) | 48 (12.1) | 1.1 (0.7-1.8) | |
≥ 37 weeks | 172 (86.9) | 348 (87.9) | – | |
mean (SD) | MD (95%CI) | |||
Gestational age at delivery (weeks) | 38.5 ± 2.1 | 38.7 ± 1.8 | 0.17 | 0.2 (−0.1-0.6) |
Per protocol analysis (> = 70% exercise sessions) | n = 83 | n = 396 | ||
n (%) | 0.52 | OR (95%CI) | ||
Preterm birth | ||||
< 37 weeks | 8 (9.6) | 48 (12.1) | 0.8 (0.4-1.7) | |
≥ 37 weeks | 75 (90.4) | 348 (87.9) | – | |
mean (SD) | MD (95%CI) | |||
Gestational age at delivery (weeks) | 38.8 ± 2.0 | 38.7 ± 1.8 | 0.63 | −0.1 (−0.5; 0.3) |
Sensitivity analysis (per protocol 100%) b | n = 23 | n = 396 | ||
n (%) | OR (95%CI) | |||
Preterm birth | 0.62 | |||
< 37 weeks | 2 (8.7) | 48 (12.1) | 0.7 (0.2;3.0) | |
≥ 37 weeks | 21 (9.3) | 348 (87.9) | – | |
mean (SD) | MD (95%CI) | |||
Gestational age at delivery (weeks) | 38.8 ± 2.5 | 38.7 ± 1.8 | 0.87 | −0.1 (−0.8;0.7) |