Effects of pre-pregnancy body mass index on pregnancy and perinatal outcomes in women with PCOS undergoing frozen embryo transfer

Table 3 Obstetrical and neonatal outcome stratified by BMI

	Singleton births			Normal vs. Overweight	Overweight vs. Obestiy	Normal vs. Obesity
	Normal(N = 341)	Overweight(N = 144)	Obesity(N = 79)	Normal vs. Overweight	Overweight vs. Obestiy	Normal vs. Obesity
Hypertensive disorders in pregnancy	7.62%(26/341)	9.72%(14/144)	10.13%(8/79)	0.295	0.551	0.317
Gestational diabetes	4.69%(16/341)	7.64%(11/144)	8.86%(7/79)	0.158	0.476	0.136
Preeclampsia	0.59%(2/341)	1.39%(2/144)	2.53%(2/79)	0.346	0.449	0.166
Premature rupture membrane	1.76%(6/341)	2.08%(3/144)	1.27%(1/79)	0.532	0.558	0.611
Birth weight, g
VLBW (< 1500 g)	0.29%(1/341)	2.08%(3/144)	1.27%(1/79)	0.083	0.425	0.344
LBW (< 2500 g)	5.28%(18/341)	6.94%(10/144)	7.59%(6/79)	0.314	0.532	0.302
Macrosomia(> 4000 g)	4.39%(15/341)	9.03%(13/144)	8.86%(7/79)	0.052	0.589	0.113
Small-for-gestational age(<10th percentile)	6.15%(21/341)	7.64%(11/144)	7.59%(6/79)	0.352	0.607	0.409
Large-for-gestational age(>90th percentile)	18.47%(63/341)	19.44%(28/144)	18.99%(15/79)	0.463	0.547	0.519
Length at birth (cm)	50.13 ± 2.56	50.35 ± 2.73	49.78 ± 3.11
Gestation weeks at delivery (weeks)
Very PTD (< 32 weeks)	1.47%(5/341)	2.78%(4/144)	2.53%(2/79)	0.268	0.641	0.395
PTD (< 37 weeks)	7.62%(26/341)	11.11%(16/144)	10.13%(8/79)	0.168	0.516	0.317
Child’s sex, no.(%)
Male	51.32%(175/341)	44.44%(64/144)	45.57%(36/79)	0.099	0.491	0.213
Female	48.68%(166/341)	55.56%(80/144)	54.43%(43/79)

PTD (preterm delivery:< 37 weeks of gestation), very PTD (very preterm delivery:< 32 weeks of gestation), LBW (low birth weight: birth weight < 2500 g);VLBW (very low birth weight: birth weight < 1500 g)

ISSN: 1471-2393