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Epidemiol Health : Epidemiology and Health



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Original Article Hypertensive diseases among rural adults
Joung Soon Kim
Epidemiol Health 1979;1(1):69-75
DOI: https://doi.org/
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This study was carried out in 1976 on rural adult population older than 15 years. The study population was randomly sampled by village unit, in which 9.2% of the total households and 9.3% of the total population was included. The population studied consisted of 663 males and 813 females comprising 45% of the population sampled. Following the individual interview by household visit, each individual was examined by medical doctor at the temporary local clinic furnished with simple laboratory tests. Some sophisticated laboratory tests and cases who needed further diagnostic study were refered to hospitals. Criteria for hypertension and hypertensive heart disease were based on WHO criteria and U.S. Health Survey criteria. Blood pressure was measured twice for each individual, the first by a trained nurse and the second by examining doctor, and averaged. Measurements of height and weight to compute relative body weight were done by trained nurses at the tield. The result s obtained are as following: 1. The mean systolic blood pressure was 127±8.4 mmHg for males and 123.1±17.5 mrmHg for females, and it increased with advancing ages ; for example the mean systolic blood pressure for 15-19 years was 120±11.4 mmHg compared with 140.3±25.3 mmHg for the group older than 70 years in males. The increase of the mean blood pressure was the most abrupt at age 50 years . 2. The mean diastolic blood pressure was 82.4±11.7 mmHg for males and 80.7±11.4 mmHg for females with slow and gradual increase in accordance with the advancing ages. 3. The prevalences of definite and borderline hypertension were 7.7% and 9.5% for males whereas they were 6.5% and 8.1% for females respectively. As was in the case of mean systolic blood pressure, the prevalence of definite hypertension showed abrupt increase at age 50 years for both sexes. 4. The prevalence of hypertensive heart disease among the study population was 2.1%, the proportion of hypertensive heart disease was 3.9% and 25.0% among borderline hypertensives and definite hypertension patients respectively. 5. Frequency and distribution of other diseases except the hypertensive heart disease did not show much difference between normotensives and hypertensives. 6. Among suspected contributing factors to the hypertension analysed, the association of hypertension with relative body weight appeared to be the most strong. Also when age was controlled to 45 years and the above, alcohol drinkers had significantly higher risk of hypertension than non-drinkers. 7. The multiple correlation coefficient on relationship between the variation of blood pressure and some selected variables, i.e., age, socioeconomic status, relative body weight, and degree of cigarette smoking, was 0.305 being able to explain the relationship only in 9.3% for systolic blood pressure and 6% for diastolic blood pressure by these tour variables.

Epidemiol Health : Epidemiology and Health