The Association of Prepregnancy Body Mass Index with Pregnancy Outcomes in Chinese Women
Table 2
The association between prepregnancy BMI and pregnancy outcomes, unadjusted logistic regression model.
Pregnancy outcomes
Unadjusted logistic regression model
Underweight ()
Normal ()
Overweight ()
Obese ()
Gestational diabetes
0.679 (0.432-1.067)
Ref
1.003 (0.715-1.407)
2.838 (1.881-4.282)
PPROM
1.757 (1.210-2.549)
Ref
0.807 (0.559-1.167)
0.857 (0.510-1.440)
Anemia
1.225 (0.800-1.875)
Ref
0.982 (0.674-1.430)
0.347 (0.159-0.760)
Postpartum hemorrhage
0.784 (0.384-1.597)
Ref
1.548 (0.969-2.474)
1.329 (0.665-2.654)
Preeclampsia
0.354 (0.047-2.666)
Ref
1.402 (0.554-3.549)
4.472 (1.908-10.483)
Note: prepregnancy BMI groups were defined , normal 18.5-23.9 kg/m2, overweight 24-27.9 kg/m2, and .,, and . Abbreviations: BMI: body mass index; PPROM: preterm premature rupture of membranes.