title: [The incidence and risk factors of hypertension that developed in a male-workers' cohort for 3 years].
abstract: OBJECTIVE
  Cardiovascular disease is one of the main causes of death and morbidity in Korea. In this study, the prevalence and incidence of developing hypertension in a male-workers' cohort were investigated during 3-years follow-up with a view to find the risk factors that affected the development of hypertension.
  
  
  METHODS
  Among the 5,374 people who participated in a routine health check up, 3,852 people with normal blood pressure and who had no history of hypertension were prospectively followed up for 3 years. The classification of hypertension was based on the JNC7 report (the Seventh Report of the Joint National Committee on Prevention, Detection, Evaluation, and Treatment of High Blood Pressure). Life style factors and underlying diseases that were related to the risk factors of hypertension were collected by using a self-report questionnaires via the internet.
  
  
  RESULTS
  The prevalence of hypertension was 28.3% (1,520/5,374) at the first screening (2001). It was found that the incidence in 2004 of hypertension for the follow-up subjects (3,711) who had normal blood pressure in 2001 was 7.6 per 100 person-year. Multiple logistic regression analysis of the variables related to the risk factors of hypertension was carried out. The relative risks were 1.037 (95% CI=1.022-1.053) as the age increased 1 year and 1.039 (95% CI=1.023-1.055) as the body mass index increased 1 kg/m2. The relative risk for the prehypertensive group was 2.501(95% CI=1.986-3.149) compared to the normotensive group. These results showed that age, body mass index and the baseline blood pressure were significantly related to the incidence of hypertension.
  
  
  CONCLUSIONS
  The incidence of hypertension was 7.6 per 100 person-year during follow-up. It was concluded that the risk factors for developing hypertension in the short-term were age, BMI, and prehypertension; Especially, this showed that it is necessary for prehypertensives to manage their body weight and blood pressure to prevent hypertension in middle-age by modifying their life style.
authors.affiliation: Radiation Health Research Institute, Korea Hydro & Nuclear Power CO.,LTD.
authors.forename: Hyun-Ju
authors.initials: HJ
authors.lastname: Seo
authors.forename: Soo-Geun
authors.initials: SG
authors.lastname: Kim
authors.forename: Chong-Soon
authors.initials: CS
authors.lastname: Kim
authors.forename: Yun-Kyun
authors.initials: YK
authors.lastname: Chang
authors.forename: Il-Geun
authors.initials: IG
authors.lastname: Park
mesh_terms: D000328:Adult; D000367:Age Factors; D001794:Blood Pressure; D015992:Body Mass Index; D015331:Cohort Studies; D015438:Health Behavior; D006801:Humans; D006973:Hypertension / Q000453:epidemiology*; D015994:Incidence; D008297:Male; D015995:Prevalence; D012307:Risk Factors