1.   Its effectiveness in preventing pregnancy is as good or better than oral contraceptives.

2.   Kaiser spokeswoman Jamie Trevor said that patients are told that no sterilization procedure short of a complete hysterectomy can prevent pregnancy.

3.   So alarming is the frequency of adolescent childbirth that President Clinton recently announced a community-oriented campaign to prevent teen pregnancy.

4.   The way to reduce abortion is to prevent unwanted pregnancy.

5.   We need practical approaches to preventing teen pregnancies, not moralistic ones.

6.   These methods prevent pregnancy.

7.   And someone came up with scientific means of preventing pregnancies.

8.   And the pills have the additional benefit of preventing unwanted pregnancies.

9.   Arguments ensued about the logic of shifting money used to prevent unplanned pregnancies to making abortions possible.

10.   Approved in the United States two years ago, Preven, according to its manufacturer, prevents pregnancy.