title: Effects of cigarette smoking on blood pressure stratified by BMI in Mongolian population, China.
abstract: BACKGROUND
  The relationship between smoking and hypertension is still unclear and controversial; we examine effects of smoking on blood pressure stratified by body mass index (BMI) in the Mongolian population.
  
  
  METHODS
  A total of 2589 Mongolians aged 20 years or more were recruited as study subjects. Demographic data, lifestyle factors, family history of hypertension, blood pressure measurements, physical examination and blood sample were obtained and analyzed for all subjects.
  
  
  RESULTS
  Among subjects with BMI<25 kg/m(2), adjusted mean diastolic blood pressure in all smokers (82, 83 and 82 mmHg for subjects who smoke 1-9, 10-19 and >20 cigarettes/day, respectively) were lower than that in non-smokers (84 mmHg), all p-values <0.05; among subjects with BMI>25 kg/m(2), mean systolic blood pressure (137 mmHg for non-smokers, 141, 135 and 132 mmHg for subjects who smoke 1-9, 10-19 and >20 cigarettes/day, respectively) decreased with amount of smoking and linear trend was statistically significant, p<0.05. Multivariate adjusted odds ratios of hypertension for three smoking groups were all not statistically significant.
  
  
  CONCLUSIONS
  This study did not provide support that smoking was a risk factor of hypertension and elevated blood pressure.
authors.affiliation: Department of Epidemiology, Medical College of Soochow University, Suzhou, China.
authors.forename: Hongmei
authors.initials: H
authors.lastname: Li
authors.forename: Weijun
authors.initials: W
authors.lastname: Tong
authors.forename: Aili
authors.initials: A
authors.lastname: Wang
authors.forename: Zhe
authors.initials: Z
authors.lastname: Lin
authors.forename: Yonghong
authors.initials: Y
authors.lastname: Zhang
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001794:Blood Pressure / Q000502:physiology*; D015992:Body Mass Index; D002681:China / Q000453:epidemiology; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D006973:Hypertension / Q000453:epidemiology* / Q000209:etiology; D008019:Life Style; D008297:Male; D008875:Middle Aged; D012307:Risk Factors; D012907:Smoking / Q000453:epidemiology* / Q000503:physiopathology*; D055815:Young Adult