Table 1. Number of fetuses, pregnancy rate, and fetal weight in surgically treated rats 19 days after mating with male rats.

	Normal control (n = 8)	ECM-SPS (n = 8)	SPS (n = 9)	P value
Pregnancy rate (%)	100%	75%	44.44%*	0.022†
Average litter per pregnancy (means ± SD)	10.13 ± 0.99	5.38 ± 4.44	2.00 ± 2.94*	0.0008‡
Fetal weight (g) (means ± SD)	4.50 ± 0.26	4.53 ± 1.84	4.96 ± 1.23	0.5854§

*P < 0.05. SPS group versus normal controls.

†Fisher’s exact test.

‡Kruskal-Wallis test.

§One-tailed one-way ANOVA test. Data are presented as means ± SD.