Rafan, Siti Nurhani
(2017)
Prevalence of prehypertension and its associated factors among adults attending outpatient clinic in Universiti Sains Malaysia Hospital.
Masters thesis, Universiti Sains Malaysia.
Abstract
Background: Prehypertension is a new term introduced by The Seventh Report of the Joint
National Committee on Prevention, Detection, Evaluation and Treatment of High Blood
Pressure (JNC-7). Prehypertension is defined as blood pressure from 120 to 139 mmHg
systolic or 80 to 89 mmHg diastolic. Estimation of prevalence of prehypertension in
population and identify cardiovascular associated factors is important to reduce the
progression to hypertension.
Objectives: To determine the prevalence of prehypertension and associated factors among
adult attending outpatient clinic in USM Hospital.
Methodology: A cross sectional study was conducted in 2015 among adults attending
outpatient clinic in USM Hospital. A total 151 adults age 18-year-old and above
participated in this study. Face to face interview was done by using Malay and English
version of Malaysia NCD (Non-communicable Disease) surveillance questionnaire, which
consist of sociodemographic, lifestyle status and measurement of anthropometric data.
Blood pressure was measured three times using sphygmomanometer and the first reading
was removed and average from two reading was recorded for further data analysis. Logistic
regression was done to look at the associated factors of prehypertension.Result: The prevalence of prehypertension was 37.1% (95% CI: 29.29, 44.69). Factors
associated with prehypertension in this study were age (OR:1.06; 95% CI: 1.02,1.11;
p=0.007), male (OR:4.44 ;95% CI: 1.58, 12.44; p=0.005) and abnormal waist
circumference (OR:31.65; 95% CI: 11.25,89.02; p<0.001) from multiple logistic regression
analysis.
Conclusion: The prevalence of prehypertension among adult attending outpatient clinic was
37.1% and it was comparable with other studies in Malaysia. Increasing age, male gender
and abnormal waist circumference were associated with prehypertension. An awareness of
prehypertension among healthcare providers and education of prehypertension among
community need to be implemented to increase awareness regarding the risk of getting
hypertension and cardiovascular diseases.
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