中国
出生率
产科
医学
早产
儿科
怀孕
人口
环境卫生
胎龄
研究方法
地理
生物
遗传学
考古
作者
Jun Zhang,Kun Sun,Yongjun Zhang
标识
DOI:10.1016/s2214-109x(21)00337-5
摘要
Globally, one in ten babies are born preterm, and the preterm birth rate has been increasing.1 The second highest number of preterm births are reported in China, with more than 1 million babies born preterm every year. Our meta-analysis showed an increase in preterm rate by 1·1% per year from 1990 to 2016.2 In the Lancet Global Health, Kui Deng and colleagues3 estimated an increase of 1·3% per year from 2012 to 2018. Their data also suggested that the increasing preterm birth rate might have accelerated after the introduction of the universal two child policy in China.
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