Contraceptive failure in the United States: estimates from the 1982 National Survey of Family Growth

摘要: A multivariate life-table analysis of national survey data from 1982 indicates that among currently married women, the pill and IUD have lowest use-failure rates. During first year use, about three percent users six experience an unintended pregnancy. Failure rates for remaining methods range 14 condom to 22 spermicides; between these lie rhythm natural family planning (16 percent), diaphragm (17 percent) other methods, mainly withdrawal, douche abstinence. Married women using no contraceptive method pregnancy rate 40 during unprotected intercourse. woman's age, intention (either delay or prevent births), parity income all significant effects on risk The generally declines with except attempting unwanted pregnancy, whom under 20 lower failure than do those 20-29 years age. As expected, seeking a wanted difference being greatest age smallest 20-29-year-olds. Use-failure low-income are higher larger incomes, while low-parity parity. On average, standardized single probably because average level intercourse women. In addition, understated substantial underreporting abortion women; if reporting were complete, would be 1.4 times as high they appear here, thus close Differences in show number similarities seen women: Use is associated rates, reliance intermediate use spermicides linked highest However, exhibit found at levels women.(ABSTRACT TRUNCATED AT 400 WORDS)