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Estimation of Causal Effects of Pregnant Women's Sensitivity to Cold (hiesho) on Uterine Inertia and Prolonged Labor:Adjustment of Confounding Factors by Propensity Scores Sachiyo Nakamura 1 , Shigeko Horiuchi 2 , Haruo Yanai 2 1Keio University 2St. Luke's College of Nursing Keyword: 冷え症 , 微弱陣痛 , 遷延分娩 , 傾向スコア , sensitivity to cold (hiesho) , uterine inertia , prolonged labor , propensity scores pp.3-12
Published Date 2013/12/20
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Abstract

 Purpose:The purpose of this study is to analyze the difference in incidence of uterine inertia and prolonged labor between pregnant women with hiesho and those without hiesho and to estimate the causal effects.

 Method:The study design was a retrospective cohort study. The analysis was conducted on 2,540 women in hospital after delivery, over the approximately twelve months between October 19, 2009 and October 8, 2010 (response rate:60.8%). The research methods employed were a self-administered questionnaire and data extraction from medical records. In this analysis, confounding factors were adjusted by carrying out analysis of covariance and stratified analysis using propensity scores.

 Results:Of study respondents, 41.9 percent had hiesho. The regression coefficient of hiesho was 0.69, p<0.001 and the odds ratio was 2.00 for uterine inertia (analysis of covariance). The regression coefficient of hiesho was 0.83, p<0.001 and the odds ratio was 2.38 for prolonged labor (analysis of covariance).

 Conclusion:The incidence of uterine inertia was twice as high among pregnant women with hiesho than those without hiesho, and the incidence of prolonged labor was 2.3 times higher. It was inferred that hiesho may have causal effects on uterine inertia and prolonged labor.


Copyright © 2013, Japan Academy of Nursing Science. All rights reserved.

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電子版ISSN 2185-8888 印刷版ISSN 0287-5330 日本看護科学学会

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