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Study questionTo what extent is preconception maternal or paternal coronavirus disease 2019 (COVID-19) vaccination associated with miscarriage incidence?Summary answerCOVID-19 vaccination in either partner at any time before conception is n…
ObjectiveTo evaluate the association between seasonal influenza vaccination and miscarriage using data from an ongoing, prospective cohort study.MethodsWe analyzed 2013-2022 data from PRESTO (Pregnancy Study Online), a prospective prepregna…
PurposeTo evaluate the relationships among history of asthma, asthma severity, and spontaneous abortion (SAB).MethodsPregnancy Study Online is a preconception cohort study of North American couples. During the preconception period, female p…
We sought to determine the relationship of fibroids to pregnancy loss in a prospective cohort in which fibroid status was uniformly documented in early pregnancy. Participants had an intake interview, transvaginal ultrasonography, computer-…