In the population-based cohort study by Buyun Liu and colleagues, maternal pre-pregnancy obesity was significantly associated with an increased risk of preterm birth on analysis of over 7 million mother–child pairs, and the magnitude of this association differed greatly by maternal age and race or ethnicity. This study provides important findings that enhance our knowledge of the management of maternal pre-pregnancy obesity, and these findings might subsequently lead to a plan for the development of prevention programmes for preterm birth. However, we would like to voice two concerns regarding the interpretation of the results.

中文翻译：

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孕妇孕前肥胖和早产：需要更多的探索。

在Buyun Liu及其同事进行的基于人群的队列研究中，对超过700万对母婴进行分析后，母亲的孕前肥胖与早产的风险显着相关，而且这种联系的程度因母亲的年龄而有很大差异。和种族或种族。这项研究提供了重要的发现，可增强我们对孕产前肥胖管理的认识，这些发现随后可能会导致制定早产预防计划的计划。但是，我们想对结果的解释提出两个关注。