Adverse outcomes among pregnant women with COVID-19 according to hospitalization status: A prospective individual participant data meta-analysis in Europe and North America

Background: Understanding the varied impact of COVID-19 severity on pregnancy outcomes is crucial for informed clinical management and targeted interventions.Objective: To evaluate the impact of COVID-19 on pregnancy outcomes, distinguishing between pregnant women managed in primary care and those requiring hospitalization. Search Strategy:Regulatory authorities actively promoted global cooperation on COVID-19's impact during pregnancy.Data were obtained through these regulatory bodies and direct researcher communication rather than through systematic searches.Selection Criteria: Data sources required secondary population-based data to identify pregnancies with COVID-19, along with hospitalization, diagnostic and medication codes.Eligibility for the meta-analysis was determined through protocol evaluation and researcher consultations.