Table 3.

Comparison of efficacy.

		Vaginal  n = 77	Caesarean  n = 94	Total  n = 171	p value	Odds ratio
Pregnancy	No	77	94	171	—	—
	Yes	0	0	0
Expulsion	No	70	92	162	0.042	4.273
	Yes	07∗	02	09
Discontinuation∗∗  (removal)	No	72	92	164	0.152	3.052
	Yes	05	02	07

^∗One expulsion was partial expulsion.

^∗∗Removal on patient request.