Zeitlin Jennifer, Mortensen Laust, Cuttini Marina, Lack Nicholas, Nijhuis Jan, Haidinger Gerald, Blondel Béatrice, Hindori-Mohangoo Ashna D
Inserm UMR 1153, Obstetrical, Perinatal and Pediatric Epidemiology Research Team (Epopé), Center for Epidemiology and Statistics Sorbonne Paris Cité, DHU Risks in pregnancy, Paris Descartes University, Paris, France.
Department of Public Health, University of Copenhagen, Copenhagen, Denmark Methodology and Analysis, Statistics Denmark, Copenhagen, Denmark.
J Epidemiol Community Health. 2016 Jun;70(6):609-15. doi: 10.1136/jech-2015-207013. Epub 2015 Dec 30.
Stillbirth and neonatal mortality rates declined in Europe between 2004 and 2010. We hypothesised that declines might be greater for countries with higher mortality in 2004 and disproportionally affect very preterm infants at highest risk.
Data about live births, stillbirths and neonatal deaths by gestational age (GA) were collected using a common protocol by the Euro-Peristat project in 2004 and 2010. We analysed stillbirths at ≥28 weeks GA in 22 countries and live births ≥24 weeks GA for neonatal mortality in 18 countries. Per cent changes over time were assessed by calculating risk ratios (RR) for stillbirth, neonatal mortality and preterm birth rates in 2010 vs 2004. We used meta-analysis techniques to derive pooled RR using random-effects models overall, by GA subgroups and by mortality level in 2004.
Between 2004 and 2010, stillbirths declined by 17% (95% CI 10% to 23%), with a range from 1% to 39% by country. Neonatal mortality declined by 29% (95% CI 23% to 35%) with a range from 9% to 67%. Preterm birth rates did not change: 0% (95% CI -3% to 3%). Mortality declines were of a similar magnitude at all GA; mortality levels in 2004 were not associated with RRs.
Stillbirths and neonatal deaths declined at all gestational ages in countries with both high and low levels of mortality in 2004. These results raise questions about how low-mortality countries achieve continued declines and highlight the importance of improving care across the GA spectrum.
2004年至2010年间,欧洲的死产率和新生儿死亡率有所下降。我们推测,2004年死亡率较高的国家下降幅度可能更大,并且对风险最高的极早产儿影响不成比例。
欧洲围产儿统计项目于2004年和2010年采用通用方案收集了按孕周(GA)分类的活产、死产和新生儿死亡数据。我们分析了22个国家孕龄≥28周的死产情况以及18个国家孕龄≥24周的活产儿的新生儿死亡率。通过计算2010年与2004年死产、新生儿死亡率和早产率的风险比(RR)来评估随时间的百分比变化。我们使用荟萃分析技术,通过随机效应模型总体上、按GA亚组以及按2004年的死亡率水平得出合并RR。
2004年至2010年间,死产率下降了17%(95%CI为10%至23%),各国降幅从1%至39%不等。新生儿死亡率下降了29%(95%CI为23%至35%),降幅从9%至67%不等。早产率没有变化:0%(95%CI为-3%至3%)。所有孕周的死亡率下降幅度相似;2004年的死亡率水平与RR无关。
在2004年死亡率高低不同的国家,所有孕周的死产和新生儿死亡均有所下降。这些结果引发了关于低死亡率国家如何实现持续下降的问题,并突出了改善整个孕周范围内护理的重要性。