• E Hemminki, A Heino, and M Gissler.
• THL (National Institute for Health and Welfare), Helsinki, Finland Nordic School of Public Health, Gothenburg, Sweden. elina.hemminki@thl.fi
• BJOG. 2011 Sep 1; 118 (10): 1186-95.

ObjectiveTo describe: (i) trends in centralisation and unplanned out-of-hospital births; (ii) perinatal mortality by place of birth; and (iii) health and birth outcomes in areas served by hospitals of different levels.DesignCross-sectional analysis of medical birth register data.SettingFinland, from 1991 to 2008, and Uusimaa district from 2004 to 2008.PopulationAll births.MethodsIn the hospital-based analysis, birthweight was adjusted by logistic regression. In the area-based analysis results were calculated according to where women lived, grouping them into areas served by different hospitals. The mother's background characteristics were adjusted for by logistic regression.Main Outcome MeasuresPlace of birth, unplanned out-of-hospital birth, perinatal mortality, newborn outcomes, and birth procedures.ResultsThe number of birthing hospitals declined, the mean number of births per hospital increased, and more births, particularly high-risk births, occurred in university hospitals. Unplanned out-of-hospital births were rare, and their numbers increased in the 2000s, but regional differences declined. Perinatal mortality was higher in the university hospitals than in other hospitals, but after adjusting for birthweight, it was lower. Among children weighing more than 2500 g, mortality was similar for all hospital levels. In out-of-hospital births, perinatal mortality was much higher than in other children. The area-based analysis did not systematically show better or worse results for the areas served by lower level hospitals: after adjusting for the background characteristics of the mothers, all differences were found to be small.ConclusionsThe health and service data do not support the need to close down small hospitals in a regionalised system where there is a referral system that functions well.© 2011 The Authors BJOG An International Journal of Obstetrics and Gynaecology © 2011 RCOG.

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