Jun 24 2009
Contraception Efficacy
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 |
|
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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