Risk factors for ectopic pregnancy occurrence: Systematic review and meta-analysis.

Background: Given the high incidence of ectopic pregnancy (EP) in the general population and the high maternal morbidity and mortality rates associated with it, determining risk factors for the occurrence of EP is essential for directing attention and care to risk groups, aiming for early diagnosis, favorable outcomes, and the development of prevention strategies.

Objectives: The aim of this study was to identify risk factors for the occurrence of EP.

Search Strategy: A systematic review with meta-analysis was performed on the electronic databases MEDLINE/PubMed, LILACS, The Cochrane Library, and Virtual Health Library (VHL), searching the following terms "Ectopic Pregnancy" or "Ectopic Gestation" and "Risk Factors" or "Predisposing Factors".