title: [Prevalence and risk factors of prehypertensive status in people from the rural area of Lanxi county, Heilongjiang province].
abstract: OBJECTIVE
  To access the prevalence of prehypertensive stage and its associated risk factors in rural inhabitants from Lanxi county in Heilongjiang province.
  
  
  METHODS
  Through cluster multistage and random sampling methods, local people aged > or = 15 years old in Lanxi county were selected. A survey on blood pressure and associated risk factors was carried out. Overnight fasting blood specimen of people aged > or = 35 years old was collected. Chi-square test, t-test and logistic regression analyses were then performed.
  
  
  RESULTS
  5272 residents were surveyed including 2539 male and 2733 female subjects. The overall prevalence of prehypertension was 36.34%. The prevalence of prehypertension appeared to be higher in males (39.50%) than in females (33.41%) (chi2 = 58.9887, P < 0.0001). The prevalence of prehypertension decreased with increasing age in men > or = 25 years old (chi2 = 96.0698, P < 0.0001), and in women > or = 35 years old (chi2 = 11.5784, P = 0.0208). Data from multivariable logistic regression showed that being male, aged (> or = 55 years old), with waist circumference as > or = 85 cm for men and > or = 80 cm for women, BMI > or = 25.0 kg/m2 and fasting plasma glucose > or = 7.0 mmol/L were risk factors of prehypertension while high-density lipoprotein cholesterol < 0.9 mmol/L was shown as a protective factor (OR = 0.740, P = 0.0036). Dose-response relationships were seen between prehypertension and age, BMI and FPG.
  
  
  CONCLUSIONS
  Prehypertension was popular in the rural area, with high prevalence seen in teenagers. Programs on prehypertension prevention should start from teenagers. Risk factors of prehypertension increased when people became age 55 or older. There was a need to monitor BP more often and to control BP through non-drug methods.
authors.affiliation: Department of Epidemiology, School of Public Health, Harbin Medical University, Harbin 150081, China.
authors.forename: Li-li
authors.initials: LL
authors.lastname: Ling
authors.forename: Jing-bo
authors.initials: JB
authors.lastname: Zhao
authors.forename: Yu-juan
authors.initials: YJ
authors.lastname: Zhao
authors.forename: Shi-ying
authors.initials: SY
authors.lastname: Fu
authors.forename: Fu-man
authors.initials: FM
authors.lastname: Wang
authors.forename: Li-ting
authors.initials: LT
authors.lastname: Yang
authors.forename: Li-hang
authors.initials: LH
authors.lastname: Dong
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001786:Blood Glucose / Q000032:analysis; D001794:Blood Pressure; D002681:China / Q000453:epidemiology; D008076:Cholesterol, HDL / Q000097:blood; D005260:Female; D006801:Humans; D006973:Hypertension / Q000453:epidemiology*; D008055:Lipids / Q000097:blood; D008297:Male; D008875:Middle Aged; D015995:Prevalence; D012307:Risk Factors; D012424:Rural Population; D011795:Surveys and Questionnaires; D055815:Young Adult
chemical_list: D001786:Blood Glucose; D008076:Cholesterol, HDL; D008055:Lipids