Author

Yi GuoFollow

Date of Award

January 2018

Document Type

Open Access Thesis

Degree Name

Master of Public Health (MPH)

Department

School of Public Health

First Advisor

Yawei Zhang

Abstract

Cigarette smoking and hypertension are well known risk factors for cardiovascular disease, but the association between cigarette smoking and blood pressure/hypertension remains controversial. Although several existing studies have examined this association, their results are inconsistent. Therefore, this study is intended to examine the association between smoking and blood pressure/hypertension. This cross-sectional study was conducted in rural China. The study subjects were 575 volunteers with a mean age of 48.3 ± 5.6 years. They were divided into smokers and non-smokers. The effects of smoking on blood pressure and the prevalence of hypertension were examined. The results show that current smoking is associated with increased blood pressure and the prevalence of hypertension, but the associations are not statistically significant. After stratification by body mass index (BMI), smokers with BMI < 23 kg/m2 have a 3.717 mmHg increase in diastolic blood pressure as compared to non-smokers with BMI < 23 kg/m2 (p=0.017). Using non-smokers with BMI < 23 kg/m2 as a reference, smokers with BMI < 23 kg/m2 have a 4.712 mmHg increase in systolic blood pressure (p=0.034) and a 3.454 mmHg increase in diastolic blood pressure (p=0.011), non-smokers with BMI ≥ 23 kg/m2 have a 9.685 mmHg increase in systolic blood pressure (p<0.001) and a 7.259 mmHg increase in diastolic blood pressure (p<0.001), and smokers with BMI ≥ 23 kg/m2 have a 9.186 mmHg increase in systolic blood pressure (p<0.001) and a 7.793 mmHg increase in diastolic blood pressure (p<0.001). The odds of hypertension among non-smokers with BMI ≥ 23 kg/m2 is 2.47 times those among non-smokers with BMI < 23 kg/m2 (p=0.003). The odds of hypertension among smokers with BMI ≥ 23 kg/m2 is 3.34 times those among non-smokers with BMI <23 kg/m2 (p=0.005). Therefore, cigarette smoking is more likely to be associated with increased blood pressure and the prevalence of hypertension among overweight/obese people.

Comments

This is an Open Access Thesis.

Open Access

This Article is Open Access

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