Stopping and switching contraceptive methods: findings from Contessa, a prospective longitudinal study of women of reproductive age in England

作者: Kaye Wellings , Nataliya Brima , Katharine Sadler , Andrew J. Copas , Lisa McDaid

DOI: 10.1016/J.CONTRACEPTION.2014.09.008

关键词: DemographyAbortionHealth Survey for EnglandFamily planningMedicineDiscontinuationDeveloped countryUnintended pregnancyPopulationGynecologyLongitudinal study

摘要: Abstract Background Discontinuation of, and change in, use of contraceptive methods contributes to high unplanned pregnancy rates. The aims the Contessa study were estimate prevalence reasons for discontinuation assess implications preventive intervention. Methods Prospective cohort 1091 potentially fertile women aged 18–49, carried out during 2008, using a sample drawn from Health Survey England 2006, random probability survey health. We baseline followed by three further waves, exploring patterns use, characteristics experiencing each, change. Findings A percentage 3.7 at risk discontinued and/or changed method in year, compared with 4.7% who used no method. Compared continuous users, stoppers switchers younger, better educated more likely be single. Women or their ease reliability, side effects concerns over health effects. Barely quarter such decisions influenced medical staff. Interpretation Effective strategies aid adherence have proved elusive but, if found, could reduce rates appreciably. Understanding factors contributing successful practice is essential prevention unintended pregnancy.

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