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dc.contributor.authorHosoya, Satoshi-
dc.contributor.authorTsujimoto, Tetsuro-
dc.date.accessioned2022-08-12T01:39:04Z-
dc.date.available2022-08-12T01:39:04Z-
dc.date.issued2022-06-
dc.identifier.urihttp://localhost:8080/xmlui/handle/123456789/2856-
dc.description.abstractInfluence of Atmospheric Conditions on Labor Onset: A Single-Center Retrospective Cross-Sectional Study in Japan Satoshi Hosoya1 , Tetsuro Tsujimoto2,3,*, Hajime Oishi1 , Miyuki Sadatsuki1 1Department of Obstetrics and Gynecology, National Center for Global Health and Medicine, 162-8655 Tokyo, Japan 2Department of Diabetes, Endocrinology and Metabolism, National Center for Global Health and Medicine, 162-8655 Tokyo, Japan 3Department of Diabetes and Endocrinology, Toranomon Hospital Kajigaya, 213-8587 Kanagawa, Japan *Correspondence: ttsujimoto@hosp.ncgm.go.jp (Tetsuro Tsujimoto) Academic Editor: Michael H. Dahan Submitted: 23 January 2022 Revised: 17 March 2022 Accepted: 21 March 2022 Published: 2 June 2022 Abstract Background: Although the mechanism underlying labor onset is controversial, there is an empirical finding that bad weather influences it. Previous reports have focused mainly on the relationship between the timing of deliveries and the weather conditions; fewer reports have focused on the timing of labor onset. Thus, we investigated the relationship for identifying atmospheric factors contributing to labor onset. Methods: We conducted a Japanese single-center retrospective cross-sectional study for identifying atmospheric factors contributing to labor onset over 8 years. We gathered daily atmospheric data in Tokyo from the official homepage of the Japan Meteorological Agency; mean barometric pressure, total solar irradiation, mean vapor pressure, and difference between the warmest and coldest temperatures. The percentage of days on which 1 or more laboring woman was hospitalized and the number of laboring women hospitalized per day were evaluated between low and middle/high groups for each atmospheric condition. Results: In total 1178 eligible women, the percentage of days significantly increased on days of low total solar irradiation (low group: 38% vs middle/high group: 31%; p < 0.001). The number of laboring women also significantly increased in such conditions (low group: 0.46 vs middle/high group: 0.38; p < 0.001). There were no significant differences in others. Conclusions: On days of low sunshine, pregnant women are more likely to start laboring. Further investigations will be needed to clarify the relationship between solar irradiation and labor onset. Keywords: weather condition; labor onset; solar irradiation; epidemiology; Japanen_US
dc.subjectweather conditionen_US
dc.subjectlabor onseten_US
dc.subjectsolar irradiationen_US
dc.subjectepidemiologyen_US
dc.subjectJapanen_US
dc.titleInfluence of Atmospheric Conditions on Labor Onset: A Single-Center Retrospective Cross-Sectional Study in Japanen_US
dc.typeArticleen_US
Appears in Collections:2. Clinical and Experimental Obstetrics & Gynecology

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