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a) Most women can learn to identify the fertile time within one to three cycles.
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a) In a study conducted by the World Health Organization, 91% of subjects demonstrated a "good" or "excellent" grasp of the ovulation method after the initial cycle of charting, 94% after two cycles, and over 97% after three cycles.
- World Health Organization. A prospective multicentre trial of the ovulation method of natural family planning. I. The teaching phase. Fertility and Sterility 1981;36(2):152-8.
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b) The time required to teach NFP varies depending upon client needs and circumstances. Some programs use less than a week of instruction. Initial instruction in how to use NFP may be spread out over two to six weeks so that couples can practice observing fertility signs and charting over the course of at least an entire cycle.
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b) Women who are in "special circumstances" -including those who are breastfeeding or postpartum - require more time to learn NFP. Teacher time may be made more efficient by teaching NFP in groups, or using videos to teach some of the material.
- World Health Organization. Natural family planning: a guide to provision of services. Geneva: WHO, 1988.
- Kass-Annese B, Aumack K, Goodman L. Guide for natural family planning trainers. Los Angeles, CA: Institute for International Studies in Natural Family Planning, 1990.
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