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Table 1—

Maternal characteristics

17P treatmentControlP 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 treatmentControlP 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 (%).

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