Mix contraceptivo e fatores associados ao tipo de método usado pelas mulheres brasileiras: estudo transversal de base populacional

This study aims to describe the contraceptive mix and analyze the factors associated with the type of contraceptive used by Brazilian women of reproductive age. This is a cross-sectional, population-based study with data from 19,962 women aged 15 to 49 years. The outcomes were use and type of contraceptive, classified as: short-acting reversible contraceptives (SARC), long-acting (LARC), and permanent. The explanatory variables were characteristics of reproductive history, sociodemographic history, and access to health services. Multinomial logistic regression was used for odds ratio (OR) estimates, with SARC being the reference category. The analyses were performed in the Survey module of the Stata software, which considered the effect of the complex sampling plan of the 2019 Brazilian National Health Survey. The prevalence of contraceptive use was 83.7%. Of the total number of users, 72% used SARC, 23.2% permanent methods, and 4.8% LARC. Women with higher education, health insurance, who had deliveries, and who participated in reproductive planning groups had a higher chance of using LARC when compared with the use of SARC, while registration at the basic health unit was associated with a lower chance of use. Still, the higher the age and parity, in addition to living with the partner, the greater the chance of using permanent methods in relation to the use of SARC. Despite the high coverage of contraception, the contraceptive mix remains obsolete, with a predominance of the use of SARC. In addition, important inequalities in access were observed, with LARC being accessible only to women with better socioeconomic conditions, while permanent methods were associated with a profile of greater social vulnerability.