International Internal Medicine Journal(IIMJ)
ISSN: 2837-4835 | DOI: 10.33140/IIMJ
Impact Factor: 1.02
Xiaodong Zhao
Jinan Municipal Center for Disease Control and Prevention, Jinan, Shandong, P.R, China
Publications
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Research Article
Role for Environmental Factors on the Relationship Between Seasons of Conception and Preterm Birth: An Observational Study in China
Author(s): Yuxiu Liang, Zhaojun Wang, Shuoxin Bai, Shuang Du, Xiaodong Zhao, Shaoqian Lin and Zhiping Wang*
Background: The relationship between season and the risk of preterm birth is not consistent. Importantly, the role of environmental factors in it is not clear. Methods: Based on the baseline of the Jinan birth cohort, the mothers from the birth cohort were the subjects, and they were interviewed face-to-face by the questionnaire. The individual exposure levels of temperature and humidity during the first 30 days of pregnancy were calculated by an inverse distance weighting method. The effect of season on the risk of preterm birth was obtained by logistic regression model, and the mediating effect of environmental factors in the association between season and preterm birth was obtained by sequential test. Results: A total of 4.4 % (263/5984) of mothers had premature children. The rates of preterm birth were higher i.. Read More»