BACKGROUND: International comparisons of population birth data provide essential benchmarks for evaluating perinatal health policies. OBJECTIVES: This study aimed to describe routine national data sources in Europe by their ability to provide core perinatal health indicators. METHODS: The Euro-Peristat Network collected routine national data on a recommended set of core indicators from 2015 to 2021 using a federated protocol based on a common data model with 16 data items. Data providers completed an online questionnaire to describe the sources used in each country. We classified countries by the number of data items they provided (all 16, 15-14, < 14). RESULTS: A total of 29 out of the 31 countries that provided data responded to the survey. Routine data sources included birth certificates (15 countries), electronic medical records (EMR) from delivery hospitalisations (16 countries), direct entry by health providers (9 countries), EMR from other care providers (7 countries) and Hospital Discharge Summaries (7 countries). Completeness of population coverage was at least 98%, with 17 countries reporting 100%. These databases most often included mothers giving birth in the national territory, regardless of nationality or place of residence (24 countries), whereas others register births to residents only. In 20 countries, routine sources were linked, including linkage between birth and death certificates (16 countries). Countries providing all 16 items (n = 8) were more likely to use EMRs from delivery hospitalisations (100%) compared to 50% and 11% in countries with 15-14 items (n = 12) and < 14 items (n = 9), respectively. Linkage was also more common in these countries (100%) versus 75% and 56%, respectively. Other data source characteristics did not differ by the ability to provide data on core perinatal indicators. CONCLUSIONS: There are wide differences between countries in the data sources used to construct perinatal health indicators in Europe. Countries using EMR linking to other sources had the best data availability.

Division of Public Health Croatian Institute of Public Health Zagreb Croatia

East European Institute for Reproductive Health Faculty of Medicine University Ovidius Constanţa Romanian Academy of Scientists Constanta Romania

Estonian Institute for Population Studies Tallinn University Tallinn Estonia

Federal Statistical Office Neuchâtel Switzerland

FISABIO Rare Diseases Research Area and Mixed Unit FISABIO UVEG Valencia Spain

Foundation for Perinatal Interventions and Research in Suriname Paramaribo Suriname

Institute for Quality Assurance and Transparency in Healthcare IQTIG Berlin Germany

Institute for the Care of Mother and Child Prague and 3rd Medical School of Charles University Prague Czech Republic

Karolinska Institute Stockholm Sweden

Maternal and Child Health and Research Centre City University of London London UK

National Center for Disease Prevention and Health Promotion Istituto Superiore di Sanità Italian National Health Institute Rome Italy

Obstetrical Perinatal and Pediatric Epidemiology Université Paris Cité Inserm Paris France

Perined Utrecht the Netherlands

Preventive Medicine and Public Health Department University of Valencia Valencia Spain

Statistics Austria Vienna Austria

THL Finnish Institute for Health and Welfare Helsinki Finland

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