O'Campo P, Faden R R, Gielen A C, Kass N, Anderson J
Department of Maternal and Child Health, Johns Hopkins School of Hygiene and Public Health, Baltimore, Md.
Fam Plann Perspect. 1993 Sep-Oct;25(5):215-9.
Data from an urban obstetrics clinic on 291 unmarried women with a current unplanned pregnancy show that women with only one partner in the past year are older and are more likely to use the most effective contraceptive methods than are women who have more than one partner. Women with only one partner are also more likely to be solely responsible for decision-making about the choice of contraceptive methods, and are not as likely to use drugs in conjunction with sex. However, women with one partner are also less likely than others to use condoms or to protect in some other way against sexually transmitted diseases or the human immunodeficiency virus.
一家城市产科诊所提供的关于291名目前意外怀孕的未婚女性的数据显示，过去一年只有一个性伴侣的女性年龄更大，比有多个性伴侣的女性更有可能采用最有效的避孕方法。只有一个性伴侣的女性也更有可能独自负责避孕方法选择的决策，而且不太可能在性行为时使用药物。然而，只有一个性伴侣的女性使用避孕套或以其他方式预防性传播疾病或人类免疫缺陷病毒的可能性也低于其他人。
