Table 3.

Comparison of number (count) of failure of physiologic transformation of the spiral arteries between patients with preterm PROM with and without histologic chorioamnionitis

	Preterm PROM
	Without histologic chorioamnionitis	With histologic chorioamnionitis	P value
Myometrial segment of the spiral arteries
Total No. of patients	11	20
Non-transformed vessels (mean ± SE)	0.91 ± 0.37	0.90 ± 0.28	NS
Completely or partially transformed vessels (mean ± SE)	1.91 ± 0.79	2.75 ± 0.63	NS
Decidual segment of the spiral arteries in the basal plate
Total No. of patients	11	19
Non-transformed vessels (mean ± SE)	0.09 ± 0.09	0.32 ± 0.22	NS
Completely or partially transformed vessels (mean ± SE)	3.18 ± 0.69	3.37 ± 0.45	NS

NS: Not significant.