Abstract
ObjectivesTo examine the types of hormonal contraceptive methods chosen at the time of the abortion, and how they correspond to post-abortion hormonal contraceptive purchase. Study designThis was a prospective register-based study. We identified the present cohort of 8428 women undergoing induced abortion between July 1, 2017 and December 31, 2018, using the Prescription Centre, Social Insurance Institution database and the Finnish National Register of Induced Abortions. From the Register of Induced Abortions, we gathered information on planned post-abortion contraception. The redeemed prescriptions of hormonal contraception were identified from the Prescription Centre until December 31, 2019. We analyzed the hormonal contraceptive methods planned at the time of the abortion, and how they corresponded to hormonal contraceptive purchase during the 1-year follow-up. We also assessed factors (age, socioeconomic status, education, civil status, and reproductive history) affecting post-abortion contraceptive purchase by using Poisson regression models. ResultsAt the time of the abortion, 83% (n = 7023) of the women were planning to start using hormonal contraception. Planning any hormonal contraception at the time of the abortion was associated with a higher probability to purchase hormonal contraception after the abortion (incidence rate ratio [IRR] 2.30, 95% confidence intervals [CI] 2.07–2.55), especially in cases of the vaginal ring (IRR 42.66, 95% CI 33.89–53.71) and contraceptive patch (IRR 156.33, 95% CI 111.31–219.55). The following variables were associated with lower incidence rates for purchasing hormonal contraception after the abortion: educational level of bachelor at the highest or missing information on education, civil status as married or divorced, and history of delivery or induced abortion. ConclusionsThe majority of women undergoing abortion plan to use hormonal contraceptive method for post-abortion contraception. Planning any hormonal contraceptive method at the time of an induced abortion is an important predictor of purchasing the method within the year after the abortion. ImplicationsHormonal contraceptive purchase after an abortion is associated with pre-abortion contraceptive planning. Many background factors for not purchasing hormonal contraception can be identified, which may guide counseling dedicated to these groups.
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