The Korean Hypertension Cohort study: design and baseline characteristics

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 cardiova...

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Main Authors: Hae-Young Lee, Ju-Yeon Lee, Ho-Gyun Shin, Song-Hee Cho, Kyun-Ik Park, Gyu-Chul Oh, Seung-Pyo Lee, Hogon Kim, Hee-Sun Lee, Kwang-Il Kim, Si-Hyuck Kang, Jang Hoon Lee, Se Yong Jang, Ju-Hee Lee, Kye Hun Kim, Jae Yeong Cho, Jae-Hyeong Park, Jieun Jang, Sue K. Park, Jean Kyung Bak
Format: Article
Language:English
Published: The Korean Association of Internal Medicine 2021-09-01
Series:The Korean Journal of Internal Medicine
Subjects:
Online Access:http://www.kjim.org/upload/pdf/kjim-2020-551.pdf
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author Hae-Young Lee
Ju-Yeon Lee
Ho-Gyun Shin
Song-Hee Cho
Kyun-Ik Park
Gyu-Chul Oh
Seung-Pyo Lee
Hogon Kim
Hee-Sun Lee
Kwang-Il Kim
Si-Hyuck Kang
Jang Hoon Lee
Se Yong Jang
Ju-Hee Lee
Kye Hun Kim
Jae Yeong Cho
Jae-Hyeong Park
Jieun Jang
Sue K. Park
Jean Kyung Bak
author_facet Hae-Young Lee
Ju-Yeon Lee
Ho-Gyun Shin
Song-Hee Cho
Kyun-Ik Park
Gyu-Chul Oh
Seung-Pyo Lee
Hogon Kim
Hee-Sun Lee
Kwang-Il Kim
Si-Hyuck Kang
Jang Hoon Lee
Se Yong Jang
Ju-Hee Lee
Kye Hun Kim
Jae Yeong Cho
Jae-Hyeong Park
Jieun Jang
Sue K. Park
Jean Kyung Bak
author_sort Hae-Young Lee
collection DOAJ
description 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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spelling doaj.art-d904c368382e4e7a983ca87a90ea66b22022-12-21T19:15:40ZengThe Korean Association of Internal MedicineThe Korean Journal of Internal Medicine1226-33032005-66482021-09-013651115112510.3904/kjim.2020.551170523The Korean Hypertension Cohort study: design and baseline characteristicsHae-Young Lee0Ju-Yeon Lee1Ho-Gyun Shin2Song-Hee Cho3Kyun-Ik Park4Gyu-Chul Oh5Seung-Pyo Lee6Hogon Kim7Hee-Sun Lee8Kwang-Il Kim9Si-Hyuck Kang10Jang Hoon Lee11Se Yong Jang12Ju-Hee Lee13Kye Hun Kim14Jae Yeong Cho15Jae-Hyeong Park16Jieun Jang17Sue K. Park18Jean Kyung Bak19 Department of Internal Medicine, Seoul National University Hospital, Seoul, Korea College of Pharmacy, Seoul National University, Seoul, Korea National Evidence-based Healthcare Collaborating Agency (NECA), Seoul, Korea National Evidence-based Healthcare Collaborating Agency (NECA), Seoul, Korea National Evidence-based Healthcare Collaborating Agency (NECA), Seoul, Korea Department of Internal Medicine, Seoul National University Hospital, Seoul, Korea Department of Internal Medicine, Seoul National University Hospital, Seoul, Korea Department of Internal Medicine, Seoul National University Hospital, Seoul, Korea Department of Internal Medicine, Seoul National University Hospital, Seoul, Korea Department of Internal Medicine, Seoul National University Bundang Hospital, Sungnam, Korea Department of Internal Medicine, Seoul National University Bundang Hospital, Sungnam, Korea Department of Internal Medicine, Kyungpook National University Hospital, Daegu, Korea Department of Internal Medicine, Kyungpook National University Hospital, Daegu, Korea Division of Cardiology, Department of Internal Medicine, Chungbuk National University Hospital, Cheongju, Korea Department of Cardiovascular Medicine, Chonnam National University Hospital, Gwangju, Korea Department of Cardiovascular Medicine, Chonnam National University Hospital, Gwangju, Korea Department of Internal Medicine, Chungnam National University College of Medicine, Daejeon, Korea Department of Preventive Medicine, Seoul National University College of Medicine, Seoul, Korea Department of Preventive Medicine, Seoul National University College of Medicine, Seoul, Korea National Evidence-based Healthcare Collaborating Agency (NECA), Seoul, KoreaBackground/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.http://www.kjim.org/upload/pdf/kjim-2020-551.pdfhypertensioncohort
spellingShingle Hae-Young Lee
Ju-Yeon Lee
Ho-Gyun Shin
Song-Hee Cho
Kyun-Ik Park
Gyu-Chul Oh
Seung-Pyo Lee
Hogon Kim
Hee-Sun Lee
Kwang-Il Kim
Si-Hyuck Kang
Jang Hoon Lee
Se Yong Jang
Ju-Hee Lee
Kye Hun Kim
Jae Yeong Cho
Jae-Hyeong Park
Jieun Jang
Sue K. Park
Jean Kyung Bak
The Korean Hypertension Cohort study: design and baseline characteristics
The Korean Journal of Internal Medicine
hypertension
cohort
title The Korean Hypertension Cohort study: design and baseline characteristics
title_full The Korean Hypertension Cohort study: design and baseline characteristics
title_fullStr The Korean Hypertension Cohort study: design and baseline characteristics
title_full_unstemmed The Korean Hypertension Cohort study: design and baseline characteristics
title_short The Korean Hypertension Cohort study: design and baseline characteristics
title_sort korean hypertension cohort study design and baseline characteristics
topic hypertension
cohort
url http://www.kjim.org/upload/pdf/kjim-2020-551.pdf
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