Measuring the invisible: perinatal health outcomes of unregistered women giving birth in Belgium, a population-based study.

The unregistered population remains under-researched because of its "invisible" status in statistics. Studies on perinatal health outcomes of unregistered women remains particularly limited. Our objectives were 1) to describe the sociodemographic profiles of women who are not legally residing in Belgium and 2) to analyze the associations of registration status with pregnancy outcomes according to socioeconomic status and nationality. ; SCOPUS: ar.j ; info:eu-repo/semantics/published