American women's sexual behavior and exposure to risk of sexually transmitted diseases.

According to nationally representative data from the 1988 National Survey of Family Growth and the 1988 and 1989 General Social Surveys, 67% of all women aged 15-44 who have ever had intercourse have had more than one partner, 41% have had four or more, 23% six or more and 8% more than 10; 71% have had one or more nonmarital partners. Fewer than 1% of currently married women report having had more than one partner in the previous three months, compared with 13% of formerly married women and 9% of single women who are sexually active. For the most part, women with multiple partners do not have characteristics that set them apart from other women; women in all age-groups and racial or ethnic groups appear equally likely to have multiple partners while unmarried. Fifty-seven percent of women who report multiple partners have never been married, and another one-quarter are currently divorced. Twenty-one percent are teenagers, 46% are aged 20-29 and 24% are in their 30s. Between 27% and 39% of all sexually active women aged 18-44 are estimated to have had direct or indirect contact with more than one sexual partner during the preceding 12 months (including women with only one partner whose partner had multiple partners). About 20% of currently sexually active women reported using the condom, but one in five condom users had not used one at last intercourse. Once social and demographic factors are controlled, condom users with multiple partners are less likely than other condom users to have used a condom at last intercourse.