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Relative Effectiveness of Birth Control Methods

Birth Control Methods:
How well can they work for me?

The following information describes how well reversible and permanent methods of birth control work to prevent unplanned pregnancy for most people and the number of unplanned pregnancies among 100 women in the first year with typical use of each method.

Reversible Methods

0

unplanned pregnancies expected among 100 women in the first year following this method.

Protects people from HIV and STDs.

Less than
1

unplanned pregnancy expected among 100 women in the first year with typical use of this method.

3-8

unplanned pregnancies expected among 100 women in the first year with typical use of this method.

15-21

unplanned pregnancies expected among 100 women in the first year with typical use of this method.

Protects people from HIV and STDs.

Emergency contraception pills may reduce the risk of unplanned pregnancy by at least 75% when taken within 3-5 days after unprotected sex.

May be highly effective when baby is fully breastfed.

16-32

unplanned pregnancies expected among 100 women in the first year with typical use of this method.

85
unplanned pregnancies expected among 100 women in the first year with typical use of this method.

Permanent Methods

Less than
1
unplanned pregnancy expected among 100 women in the first year with typical use of this method.

ADAPTED FROM Contraceptive Technology: Nineteenth Revised Edition. New York NY: Ardent Media, 2007

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