Jun 24 2009

Contraception Efficacy

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What does all these numbers mean? 

Typical use is what you would normally find in the general population.

Perfect use is when you follow every instruction to the last detail every day.

A number of 99.2% means that out of every 1000 women using this method for a full year, 8 will become pregnant and 992 will not get pregnant

Method

Typical

Perfect

STD Protection

Problems

Abstinence

100%

100%

Yes

Does not work

Pill (Progestin Only)

95%

99.9%

No

Forget to take and Side effects

Mini Pill (Combination)

95%

99.5%

No

Forget to Take

Cervical Cap with Spermicide

80%

91%

No

Need to be in place for a few hours

Given Birth

60%

74%

No

Need to be in place for a few hours

Not given Birth

80%

91%

No

Need to be in place for a few hours

LAM (Breast Feeding)

~100%

~100%

No

Saggy Breasts

Condom -Latex

86%

97%

Yes

Allergy

Depo-Provera

99.7%

99.7%

No

Side effects

Diaghragm with Spermicide

80%

94%

No

Must be fitted

Female Condom

79%

95%

Yes

Noisy and strange

IUD

No

Medical procedure to insert

Progesterone T

98%

98.5%

No

Medical procedure to insert

Copper T

99.2%

99.4%

No

Medical procedure to insert

LNg 20

99.9%

99.9%

No

Medical procedure to insert

Morning After Pill

99.7%

99.7%

No

Time limitation

Norplant

99.95%

99.95%

No

Side effects

Patch

99%

99%

No

Side effects

Natural Methods

No

Denies sex during highest libido

Calendar

75%

91%

No

Denies sex during highest libido

Ovulation Method

75%

97%

No

Denies sex during highest libido

Sympto-Thermal FAM

75%

98%

No

Denies sex during highest libido

Post-Ovulation

75%

99%

No

Denies sex during highest libido

NuvaRing

95%

99%

No

Side effects

Seasonale

95%

99%

No

Side effects, Breakthrough bleeding and Spotting

Spermicide

74%

94%

No

Allergy, conduct STDs

Sponge

No

Allergy for Spermicide

Given Birth

60%

80%

No

Allergy for Spermicide

Not Given Birth

80%

91%

No

Allergy for Spermicide

Male Sterilization

99.85%

99.9%

No

Permanent

Female Sterilization

99.5%

99.5%

No

Permanent

Withdrawal

81%

96%

No

Difficult to use, Pre-cum

No Method

15%

15%

No

Not a contraceptive

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