title: Outdoor temperature and temperature maintenance associated with blood pressure in 438,811 Chinese adults.
abstract: OBJECTIVE
  The association of temperature maintenance with blood pressure (BP) has not been studied and the association of temperature with season-related BP was not being well understood. The present study aims to be further aware of season-related BP variation in Chinese adults.
  
  
  METHODS
  We used decoded data from adults who visited the hospital for health examination from January 2008 to November 2013. Multivariate regression models were used to analyses the association between outdoor temperature and BP.
  
  
  RESULTS
  The analysis included 438,811 adults. Larger change of BP accompanied with unit change of average outdoor temperature among outpatient than inpatient patients. The association of temperature with BP was stronger in normotensives than that in hypertensives. Compared with temperature variation, the impact of temperature maintenance on BP was smaller. These associations were stronger in men, older individuals.
  
  
  CONCLUSIONS
  Temperature was strongly inversely associated with BP in Chinese adults. Temperature maintenance was mildly associated with BP compared to temperature variance. Seasonal temperature variation should be considered when screening for hypertension.
authors.affiliation: a Department of Epidemiology & Health Statistics, School of Public Health, School of Medicine , Zhejiang University , Hangzhou , Zhejiang , China.
authors.forename: Shuojia
authors.initials: S
authors.lastname: Wang
authors.affiliation: a Department of Epidemiology & Health Statistics, School of Public Health, School of Medicine , Zhejiang University , Hangzhou , Zhejiang , China.
authors.forename: Minchao
authors.initials: M
authors.lastname: Li
authors.affiliation: b Hangzhou Meteorological Bureau , Hangzhou , Zhejiang , China.
authors.forename: Zhengjiang
authors.initials: Z
authors.lastname: Hua
authors.affiliation: b Hangzhou Meteorological Bureau , Hangzhou , Zhejiang , China.
authors.forename: Chun
authors.initials: C
authors.lastname: Ye
authors.affiliation: a Department of Epidemiology & Health Statistics, School of Public Health, School of Medicine , Zhejiang University , Hangzhou , Zhejiang , China.
authors.forename: Shuying
authors.initials: S
authors.lastname: Jiang
authors.affiliation: a Department of Epidemiology & Health Statistics, School of Public Health, School of Medicine , Zhejiang University , Hangzhou , Zhejiang , China.
authors.forename: Zhaopin
authors.initials: Z
authors.lastname: Wang
authors.affiliation: c Department of International Health Care Center , The Second Affiliated Hospital ZheJiang University College of Medicine , Hangzhou , Zhejiang , China.
authors.forename: Zhenya
authors.initials: Z
authors.lastname: Song
authors.affiliation: a Department of Epidemiology & Health Statistics, School of Public Health, School of Medicine , Zhejiang University , Hangzhou , Zhejiang , China.
authors.forename: Yunxian
authors.initials: Y
authors.lastname: Yu
mesh_terms: D000328:Adult; D044466:Asian People; D001794:Blood Pressure / Q000502:physiology*; D001795:Blood Pressure Determination / Q000379:methods*; D005260:Female; D006801:Humans; D006973:Hypertension / Q000503:physiopathology*; D008297:Male; D012621:Seasons; D013696:Temperature
keywords: Blood pressure; adults; season; temperature; temperature maintenance