Table: Comparison of Fertility Awareness‒Based Methods of Contraception

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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
Standard days	5%	12%
Two-day	4%	14%
Symptothermal	< 1%	2%

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