TABLE 3. Contraceptive efficacy of diaphragms.

Date	Country	No. Women	12 Month Pregnancy Rate (Life Table or Pearl Rates) (%)
1973	USA	1186	23.0
1976	USA	2168	1.9 - 2.2
1982	USA	368	18.6
1982	UK	4217	1.9
1983	USA	721	12.5 (randomized trial with sponge)
1989	Israel*	85	3.2

* 24 month rates; "highly motivated women"