Natural family planning use-effectiveness and continuation.

Kambic, R T · Am J Obstet Gynecol · 1991

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Abstract

Numerous studies have been conducted to assess the use-effectiveness of natural family planning. However, because of imprecise definitions of terms, these studies show noncomparable results. Special effort is required to study natural family planning use-effectiveness by the same criteria as other family planning methods.

Medical subject headings