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KMID : 0338420210360051115
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The Korean Journal of Internal Medicine
2021 Volume.36 No. 5 p.1115 ~ p.1125
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The Korean Hypertension Cohort study: design and baseline characteristics
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Lee Hae-Young
Lee Ju-Yeon
Shin Ho-Gyun
Cho Song-Hee
Park Kyun-Ik
Oh Gyu-Chul
Lee Seung-Pyo
Kim Ho-Gon
Lee Hee-Sun
Kim Kwang-Il
Kang Si-Hyuck
Lee Jang-Hoon
Jang Se-Yong
Lee Ju-Hee
Kim Kye-Hun
Cho Jae-Yeong
Park Jae-Hyeong
Jang Ji-Eun
Park Sue-K.
Bak Jean-Kyung
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Abstract
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Background/Aims: Hypertension (HT) has a significant impact on public health and medical expenses. However, HT is a chronic disease that requires the long-term follow-up of a large number of patients.
Methods: The Korean Hypertension Cohort (KHC) study aimed to develop a model for calculating cardiovascular risk in HT patients by linking and utilizing the detailed clinical and longitudinal data from hospitals and the national health insurance claim database, respectively. This cohort had a planned sample size of over 11,000 HT patients and 100,000 non-HT controls. Eligible patients were hypertensive patients, who were presenting for the first time and were diagnosed with HT as a main disease from 2006 to 2011. Long-term survival data over a period of approximately 9 years were obtained from the national health insurance claim and national health examination data.
Results: This cohort enrolled 11,083 patients with HT. The mean age was 58.87 ± 11.5 years, 50.5% were male, and 31.4% were never-treated HT. Of the enrolled patients, 32.9% and 37.7% belonged to the high and moderate cardiovascular risk groups, respectively. Initial blood pressures were 149.4 ± 18.5/88.5 ± 12.5 mmHg. During the 2 years hospital data follow-up period, blood pressures lowered to 130.8 ± 14.1/78.0 ± 9.7 mmHg with 1.9 ± 1.0 tablet doses of antihypertensive medication. Cardiovascular events occurred in 7.5% of the overall patients; 8.5%, 8.8%, and 4.7% in the high, moderate, and low risk patients, respectively.
Conclusions: The KHC study has provided important information on the long-term outcomes of HT patients according to the blood pressure, comorbid diseases, medication, and adherence, as well as health behaviors and health resource use.
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KEYWORD
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Hypertension, Cohort
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