Table 2—

Logistic model results

P valueOR (95% CI)
Obese BMI (≥30 kg/m2)<0.0016.91 (2.93–16.28)
Overweight BMI (25.0–29.9 kg/m2)0.0043.70 (1.53–8.92)
17P prophylaxis<0.0013.09 (2.17–4.40)
Normal BMI (20.0–24.9 kg/m2)0.1921.80 (0.74–4.38)
Betamimetic tocolysis0.8521.04 (0.67–1.64)
Gestational age at start of outpatient care0.0500.97 (0.933–1.000)
Tobacco use0.1930.57 (0.24–1.33)