Chronicity of partner violence, contraceptive patterns and pregnancy risk

BackgroundPartner violence may interfere with a woman's ability to maintain continuous contraception and therefore contribute to increased risk of pregnancy among childbearing women.Study designA retrospective review of medical records (N=2000) was conducted from four family planning clinics in the northeast United States. Eligibility criteria for inclusion were as follows: (1) female, (2) reproductive age (menarche through menopause), (3) seeking reproductive services and (4) clinic visit for annual gynecologic exam between 2006 and 2011.ResultsPartner violence was documented in 28.5% (n=569) of medical records. Chronicity of violence influenced contraceptive patterns and pregnancy risk. Women reporting past year partner violence only [odds ratio (OR)=10.2] and violence during the last 5 years (OR=10.6) had the highest odds of not using a current method of contraception. Women reporting recent exposure to violence were most likely to change birth control methods and use emergency contraception (OR=6.5). Women experiencing any history of violence reported more frequent contraceptive method changes during the previous year.ConclusionsA history of partner violence was common among women utilizing family planning services. The chronicity of violence appeared to play a significant role in contraceptive method changes, types of methods used and pregnancy risk. These results may be one explanation for increased pregnancies among women who experience partner violence.