Comparison of Fertility Awareness‒Based Methods of Contraception
Method | Percentage of Women Who Become Pregnant During First Year of Use With Perfect Use | Percentage of Women Who Become Pregnant During First Year of Use With Typical Use |
|---|---|---|
Calendar method | 5% | 12% |
Mucus method | 4% | 14% |
Symptothermal | < 1% | 2% |
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