English Abstract
Journal Article
Research Support, Non-U.S. Gov't
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[Correlation between body mass index, waist circumference and blood pressure in rural residents from west part of Liaoning Province].

OBJECTIVE: This study observed the association between body mass index (BMI), waist circumference (WC) and blood pressure level in rural residents from west Liaoning province.

METHODS: This epidemiological study using stratified cluster random sampling was conducted from 2004 to 2006 in Fuxin County, Liaoning Province, 43,692 rural residents (21,680 males) aged 35-74 years old [(49. 8 +/-10.2) years] were surveyed. Database was established with the help of Epidata 3.1 software.

RESULTS: In total 43,692 persons were surveyed, including 21,680 male (49.6%) and 22,012 female (50.4%). The average BMI and WC was (23.31 +/- 3.08) kg/m2 and (80.87 +/- 9.0) cm, respectively. No matter male or female, SBP started from 20 kg/m2, increased with the increase of BMI; DBP increased gradually with the increase of BMI; the prevalence of hypertension were significant differences among different BMI groups (P < 0.001). Multiple logistic regression show that in male, using the group with BMI, <18 kg/m2 as control, 28-30 kg/m2 group OR and 95% CI was 6.285 (4.612-8.566); in female, when BMI >22 kg/ m2 OR increased with the increasing of BMI. In male and female, both SBP and DBP, also the prevalence rate of hypertension increased gradually with the increase of WC (P < 0.001). No matter in male or female, when BMI <24 kg/m2, and WC male <85 cm, female WC <80 cm, the average blood pressure levels and prevalence of hypertension are the lowest; after adjusting for age and other risk factors, the prevalence rate of overweight and obesity for male with hypertension OR are 1.704 (1.592-1.825) and 3.710 (3.148 -4.371) , respectively, for female is 1.527 (1.428-1.632) and 3.014 (2.668-3.405), respectively. When the WC is higher than the standard, male and female hypertension risk OR and 95% CI are 1.231 (1.153-1.314) and 1.353 (1.269-1.442), respectively.

CONCLUSION: Both BMI and WC are risk factors of hypertension.

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