[Prevalence and risk factors of prehypertensive status in people from the rural area of Lanxi county, Heilongjiang province].
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.
Ling
Li-li
LL
Department of Epidemiology, School of Public Health, Harbin Medical University, Harbin 150081, China.
Zhao
Jing-bo
JB
Zhao
Yu-juan
YJ
Fu
Shi-ying
SY
Wang
Fu-man
FM
Yang
Li-ting
LT
Dong
Li-hang
LH
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
D001786:Blood Glucose; D008076:Cholesterol, HDL; D008055:Lipids