| Seasonality bias in adverse pregnancy outcomes in Siberia. | |
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MedLine Citation:
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PMID: 17929636 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVE: To examine which months are unfavourable for conception in the region with the severe continental climate. DESIGN: Retrospective population based study. METHODS: Monthly data on incidence rate for gestose, maternal anaemia, pyelonephritis, threat to spontaneous abortion, stillbirth, perinatal death and infant death at age under one year were extracted from medical records of obstetric, delivery, and paediatric hospitals in Novosibirsk (1976-1980), Norilsk (Taimir peninsula), and Mirny (western Yakutia). Two latter towns were considered together as a northern setting. Edwards' method was applied to test seasonality. RESULTS: In Novosibirsk as well as in northern towns, the monthly distribution of time of conception for preterm births, maternal pyelonephritis, and infant deaths displays significant seasonal pattern with maximum in summer. Additionally in the North, stillbirths' conceptions also tended to be concentrated in June. CONCLUSION: In Siberia, the polar day and summer months are an unfavourable time for conceiving in respect to obstetric complications and adverse pregnancy outcomes. |
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Authors:
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Vladimir N Melnikov; Galina A Skosyreva; Sergey G Krivoschekov |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Alaska medicine Volume: 49 ISSN: 0002-4538 ISO Abbreviation: Alaska Med Publication Date: 2007 |
Date Detail:
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Created Date: 2007-10-12 Completed Date: 2007-11-20 Revised Date: 2007-12-11 |
Medline Journal Info:
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Nlm Unique ID: 0370457 Medline TA: Alaska Med Country: United States |
Other Details:
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Languages: eng Pagination: 218-20 Citation Subset: IM |
Affiliation:
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Institute of Physiology, SB RAMS, Novosibirsk, Russia. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Circadian Rhythm Climate Female Geography Humans Incidence Obstetrics Pregnancy Pregnancy Complications / epidemiology* Pregnancy Outcome* Retrospective Studies Risk Factors Seasons* Siberia / epidemiology Stillbirth* Time Factors |
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