Maternal characteristics
| . | 17P treatment . | Control . | P value . |
|---|---|---|---|
| n | 557 | 1,524 | |
| Maternal age (years) | 29 (16–44) | 30 (16–45) | 0.855 |
| >37 years | 53 (9.5) | 125 (8.2) | 0.376 |
| Tobacco use | 54 (9.7) | 87 (5.7) | 0.002 |
| Married | 421 (75.6) | 1,190 (78.1) | 0.214 |
| History of preterm delivery | 557 (100) | 1,524 (100) | — |
| Prepregnancy BMI | 26.2 ± 6.6 | 26.2 ± 6.7 | 0.791 |
| Obese BMI | 140 (25.1) | 340 (22.3) | 0.178 |
| Betamimetic tocolysis | 101 (18.1) | 375 (24.6) | 0.002 |
| Gestational age at start of out-patient management (weeks) | 19.0 (16.0–26.9) | 21.6 (4.7–25.9) | <0.001 |
| . | 17P treatment . | Control . | P value . |
|---|---|---|---|
| n | 557 | 1,524 | |
| Maternal age (years) | 29 (16–44) | 30 (16–45) | 0.855 |
| >37 years | 53 (9.5) | 125 (8.2) | 0.376 |
| Tobacco use | 54 (9.7) | 87 (5.7) | 0.002 |
| Married | 421 (75.6) | 1,190 (78.1) | 0.214 |
| History of preterm delivery | 557 (100) | 1,524 (100) | — |
| Prepregnancy BMI | 26.2 ± 6.6 | 26.2 ± 6.7 | 0.791 |
| Obese BMI | 140 (25.1) | 340 (22.3) | 0.178 |
| Betamimetic tocolysis | 101 (18.1) | 375 (24.6) | 0.002 |
| Gestational age at start of out-patient management (weeks) | 19.0 (16.0–26.9) | 21.6 (4.7–25.9) | <0.001 |
Data are median (range), means ± SD, or n (%).