RESUMO
OBJECTIVE: We aimed to conduct a meta-analysis of randomized trials comparing the immediate versus delayed provision of long-acting reversible contraceptives in postpartum subjects, focusing on short-interval pregnancies, utilization rates, and adverse events. DATA SOURCES: Cochrane Central, Embase, PubMed and ClinicalTrials.gov were systematically searched from inception up to December 19, 2023, without filters or language limitation. STUDY ELIGIBILITY CRITERIA: We selected randomized controlled trials assessing the immediate insertion of long-acting reversible contraceptives in women during postpartum period in comparison with the delayed provision. STUDY APPRAISAL AND SYNTHESIS METHODS: We calculated relative risks (RR) with 95% confidence intervals to analyze the primary outcome of utilization rates and secondary endpoints, including initiation rates, pregnancy, any breastfeeding, exclusive breastfeeding, and serious adverse events. A random effects model was employed in the R software. Moreover, we assessed the risk of bias of selected RCTs using version 2 of the Cochrane Risk of Bias Assessment Tool. RESULTS: We included 24 randomized trials comprising 2,507 participants, of whom 1,293 (51.6%) were randomized to the immediate insertion. Postpartum women in the immediate group had lower risk of pregnancy (RR 0.16; 95% CI 0.04-0.71; P = 0.02) compared with delayed group, and higher rates of long-acting reversible contraceptives at 6 months of follow-up (RR 1.23; 95% CI 1.09-1.37; P < 0.01). CONCLUSIONS: Inserting long-acting reversible contraceptives before hospital discharge was associated with a reduction in the risk of pregnancy, and increased rates of its utilization at 6 months of follow-up. This intervention may be an effective contraception strategy for postpartum women.