[Retracted] Clinical Comparison of Preterm Birth and Spontaneous Preterm Birth in Severe Preeclampsia

Table 1

Etiological analysis of preterm birth.

Grouping	Admission before 32 weeks (%)	Admission after 32 weeks	Svm (%)
Intrauterine infection	52	27%	34
Multiple pregnancy	21	16%	18
Breech (except twins)	24	6%	11
Scarred uterus	21	17%	18
Polyhydramnios	6	11%	9
Reproductive tract abnormalities	3	10%	8
Cervical laxity	9	0	3