title: [Relationship between pregnant women's sensitivity to cold (hiesho) and premature labor assessed using propensity scores for adjusting confounding factors].
abstract: OBJECTIVE
  The purpose of this study is to analyze the influence of sensitivity to cold or hiesho in pregnant Japanese women and to examine the relationship between hiesho and premature labor.
  
  
  METHODS
  In this retrospective cohort study in Japanese women after delivery, information for the approximately 12 months between October 19, 2009 and October 8, 2010 was obtained using questionnaire surveys and medical records at 6 hospitals with obstetric and pediatric departments in the Greater Tokyo Metropolitan Area. Further, in this analysis, confounding factors were adjusted by performing analysis of covariance and stratified analysis using propensity scores. The Research Ethics Review Committee of St. Luke's College of Nursing (09-057) approved this study.
  
  
  RESULTS
  Analysis of data from 2,810 women was performed. Regarding the correlation between hiesho and premature labor, the incidence of premature labor was 3.38 times higher (analysis of covariance) or 3.47 times higher (stratified analysis) among pregnant women with hiesho than among those without hiesho (P < 0.001). The results of this study proved the existing discussions that there is a correlation between hiesho
  
  
  CONCLUSIONS
  during the latter stages of pregnancy and incidence of premature labor.
authors: Keio University.
authors: Sachiyo
authors: S
authors: Nakamura
authors: Shigeko
authors: S
authors: Horiuchi
authors: Haruo
authors: H
authors: Yanai
mesh_terms: D000328:Adult; D003080:Cold Temperature; D005260:Female; D006801:Humans; D007752:Obstetric Labor, Premature / Q000209:etiology*; D011247:Pregnancy; D012189:Retrospective Studies; D011795:Surveys and Questionnaires; D013697:Thermosensing