Direct-Entry Midwifery Program, School of Arts, Sciences and Humanities of the University of São Paulo, Av. Arlindo Bettio, 1000 - Ermelino Matarazzo, São Paulo, São Paulo, 03828-000, Brazil.
Department of Population, Family and Reproductive Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA.
Reprod Health. 2019 Aug 29;16(1):131. doi: 10.1186/s12978-019-0783-9.
In Brazil, high contraceptive prevalence rates coexist with high rates of unintended pregnancies. Contraceptive discontinuation may explain this context, but few studies have focused on highly educated young women in countries with low unmet need for modern contraception. This paper explores frequency and associated factors of contraceptive discontinuation among undergraduate students in Brazil within 12-months.
This retrospective cohort study was conducted among a probability sample of 1679 undergraduates of São Paulo University. Data were collected online using a contraceptive calendar. We examined factors related to monthly discontinuation of oral pills and male condoms using Generalized Estimating Equation models.
Altogether, 19% of oral pill users and 48% of male condom users discontinued their method for method-related reasons within 12-months, and 18% of oral pill users and 15% of male condom users abandoned/or switched to less effective methods. Women in casual relationships were at increased odds of oral pill (OR = 1.4 [1.1-1.8]) and male condom discontinuation (OR = 1.3 [1.0-1.7]), and at increased odds of switching from oral pill to less effective or no method (OR = 1.4 [1.1-1.7]). Other associated factors were method specific. Women from lower socioeconomic status or who had multiple lifetime partners were more likely to discontinue or abandon the oral pill, while more sexually experienced women were less likely to discontinue the male condom.
Frequent method discontinuation in Brazil calls for greater attention to the difficulties women face when using short acting methods. Discontinuation was associated with type of partner and sexual experience highlighting the changing contraceptive needs of women at the early stages of their professional careers.
在巴西,高避孕普及率与高意外怀孕率并存。避孕中断可能解释了这种情况,但在低现代避孕需求的国家,很少有研究关注受过高等教育的年轻女性。本文探讨了巴西大学生在 12 个月内口服避孕药和男用避孕套中断的频率及其相关因素。
这是一项回顾性队列研究,在圣保罗大学的概率样本中招募了 1679 名本科生。使用避孕日历在线收集数据。我们使用广义估计方程模型检查了与每月停用口服避孕药和男用避孕套相关的因素。
共有 19%的口服避孕药使用者和 48%的男用避孕套使用者在 12 个月内因方法相关原因中断了他们的方法,18%的口服避孕药使用者和 15%的男用避孕套使用者放弃/改用效果较差的方法。处于随意性关系中的女性口服避孕药(OR=1.4 [1.1-1.8])和男用避孕套(OR=1.3 [1.0-1.7])的中断风险更高,并且更有可能从口服避孕药转为效果较差或无方法(OR=1.4 [1.1-1.7])。其他相关因素是方法特异性的。来自社会经济地位较低或有多个性伴侣的女性更有可能停用或放弃口服避孕药,而性经验较多的女性更不可能停用男用避孕套。
巴西频繁的方法中断需要更多关注女性在使用短期方法时面临的困难。中断与伴侣类型和性经验相关,突出了女性在职业早期不断变化的避孕需求。