Incidence of Hypertension in a Cohort of an Adult Population.
- Author:
Byung Yeol CHUN
1
;
Sin KAM
;
Hee Sook OH
;
Sang Won LEE
;
Kook Hyeun WOO
;
Moon Young AHN
Author Information
1. Department of Preventive Medicine and Public Health, School of Medicine, Kyungpook National University, Korea.
- Publication Type:Original Article
- Keywords:
Incidence;
Hypertension;
Cohort studies
- MeSH:
Adult*;
Cohort Studies*;
Female;
Follow-Up Studies;
Gyeongsangbuk-do;
Humans;
Hypertension*;
Incidence*;
Korea;
Male;
Primary Prevention
- From:Korean Journal of Preventive Medicine
2002;35(2):141-146
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
OBJECTIVES: This study was performed in order to assess the incidence of hypertension based on two-years follow-up of a rural hypertension-free cohort in Korea. METHODS: The study cohort comprised 2,580 subjects aged above 20 (1,107 men and 1,473 women) of Chung-Song County in Kyungpook Province judged to be hypertensive-free at the baseline examination in 1996. For each of two examinations in the two-year follow-up, those subjects free of hypertension were followed for the development of hypertension to the next examination one year (1997) and two years later (1998). The drop-out rate was 24.7% in men and 19.6% in women. Hypertension was defined as follows 1) above mild hypertension as a SBP above 140 mmHg or a DBP above 90 mmHg, 2) above moderate hypertension as a SBP above 160 mmHg or a DBP above 100 mmHg or when the participant reported having used antihypertensive medication after beginning this survey. RESULTS: The age-standardized incidence of above mild hypertension was 6 per 100 person years (PYS) in men and that of above moderate hypertension was 1.2. In women, the age-standardized rate for above mild hypertension was 5.7 and 1.5 for above mild and moderate hypertension, respectively. However, the rates of incidence as calculated by the risk method were 4.8% and 1.0% in men and 4.6%, 1.2% in women, respectively. In both genders, incidence was significantly associated with advancing age(p<0.01), In men, the incidences of above moderate hypertension by age group were 0.5 per 100 PYS aged 20-39, 0.7 aged 40-49, 1.7 aged 50-59, 3.6 aged 60-69, and 5.8 aged above 70(p<0.01). In women, those the incidence measured 0.6 per 100 PYS aged 20-39, 1.8 aged 40-49, 1.3 aged 50-59, 3.3 aged 60-69, and 5.6 aged above 70(p<0.01). After age 60, the incidence of hypertension increased rapidly. CONCLUSIONS: The incidence data of hypertension reported in this study may serve as a reference data for evaluating the impact of future public efforts in the primary prevention of hypertension in Korea.
