Age‐Specific Associations Between Systolic Blood Pressure and Cardiovascular Disease: A 10‐Year Diabetes Mellitus Cohort Study

Background The relationship between systolic blood pressure (SBP) and cardiovascular disease (CVD) among patients with diabetes mellitus remains unclear. The study aimed to explore age‐specific associations between SBP and CVD. Methods and Results A population‐based retrospective cohort study was co...

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Main Authors: Eric Yuk Fai Wan, Esther Yee Tak Yu, Weng Yee Chin, Ian Chi Kei Wong, Esther Wai Yin Chan, Shiqi Chen, Cindy Lo Kuen Lam
Format: Article
Language:English
Published: Wiley 2020-07-01
Series:Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease
Subjects:
Online Access:https://www.ahajournals.org/doi/10.1161/JAHA.119.015771
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author Eric Yuk Fai Wan
Esther Yee Tak Yu
Weng Yee Chin
Ian Chi Kei Wong
Esther Wai Yin Chan
Shiqi Chen
Cindy Lo Kuen Lam
author_facet Eric Yuk Fai Wan
Esther Yee Tak Yu
Weng Yee Chin
Ian Chi Kei Wong
Esther Wai Yin Chan
Shiqi Chen
Cindy Lo Kuen Lam
author_sort Eric Yuk Fai Wan
collection DOAJ
description Background The relationship between systolic blood pressure (SBP) and cardiovascular disease (CVD) among patients with diabetes mellitus remains unclear. The study aimed to explore age‐specific associations between SBP and CVD. Methods and Results A population‐based retrospective cohort study was conducted on 180 492 Chinese adults with type 2 diabetes mellitus in 2008–2010, with follow‐up to 2017. Age‐specific associations (<50, 50–59, 60–69, and 70–79 years) between the average SBP in the previous 2 years and CVD risk were assessed by adjusted Cox proportional hazards regression with age‐specific regression dilution ratios and patient characteristics stratified by subgroups. During a median follow‐up of 9.3 years (1.5 million person‐years), 32 545 patients developed a CVD, with an incidence rate of 23.4 per 1000 person‐years. A positive and log‐linear association between SBP and CVD risk was observed among the 4 age groups without evidence of a threshold down to 120 mm Hg, but the magnitude of SBP effect on CVD attenuated with increased age. The CVD risk in the age group <50 years was ≈22% higher than the age group 70 to 79 years (hazard ratio [HR], 1.33 [95% CI, 1.26–1.41] versus HR, 1.09 [95% CI, 1.07–1.11]). Each 10‐mm Hg higher SBP was associated with 12% (HR, 1.12 [95% CI, 1.10–1.13]), 11% (HR, 1.11 [95% CI, 1.10–1.13]), and 20% (HR, 1.20 [95% CI, 1.17–1.22]) higher risk of all composite CVD events, individual CVD, and CVD mortality, respectively. Conclusions There is a significant log‐linear relationship between baseline SBP and the risk of CVD among patients with diabetes mellitus in China. The risk increases from an SBP of 120 mm Hg onward. Age influences this relationship significantly, with younger patients (<50 years) having a greater risk of CVD for a similar rise in SBP as compared with those who are older. These findings suggest that differential target blood pressures stratified by age maybe useful.
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spelling doaj.art-81b387930e6b438992cd99cca064b8142022-12-21T18:13:06ZengWileyJournal of the American Heart Association: Cardiovascular and Cerebrovascular Disease2047-99802020-07-0191410.1161/JAHA.119.015771Age‐Specific Associations Between Systolic Blood Pressure and Cardiovascular Disease: A 10‐Year Diabetes Mellitus Cohort StudyEric Yuk Fai Wan0Esther Yee Tak Yu1Weng Yee Chin2Ian Chi Kei Wong3Esther Wai Yin Chan4Shiqi Chen5Cindy Lo Kuen Lam6Department of Family Medicine and Primary Care the University of Hong Kong Ap Lei Chau Hong KongDepartment of Family Medicine and Primary Care the University of Hong Kong Ap Lei Chau Hong KongDepartment of Family Medicine and Primary Care the University of Hong Kong Ap Lei Chau Hong KongDepartment of Pharmacology and Pharmacy the University of Hong Kong Hong KongDepartment of Pharmacology and Pharmacy the University of Hong Kong Hong KongDepartment of Family Medicine and Primary Care the University of Hong Kong Ap Lei Chau Hong KongDepartment of Family Medicine and Primary Care the University of Hong Kong Ap Lei Chau Hong KongBackground The relationship between systolic blood pressure (SBP) and cardiovascular disease (CVD) among patients with diabetes mellitus remains unclear. The study aimed to explore age‐specific associations between SBP and CVD. Methods and Results A population‐based retrospective cohort study was conducted on 180 492 Chinese adults with type 2 diabetes mellitus in 2008–2010, with follow‐up to 2017. Age‐specific associations (<50, 50–59, 60–69, and 70–79 years) between the average SBP in the previous 2 years and CVD risk were assessed by adjusted Cox proportional hazards regression with age‐specific regression dilution ratios and patient characteristics stratified by subgroups. During a median follow‐up of 9.3 years (1.5 million person‐years), 32 545 patients developed a CVD, with an incidence rate of 23.4 per 1000 person‐years. A positive and log‐linear association between SBP and CVD risk was observed among the 4 age groups without evidence of a threshold down to 120 mm Hg, but the magnitude of SBP effect on CVD attenuated with increased age. The CVD risk in the age group <50 years was ≈22% higher than the age group 70 to 79 years (hazard ratio [HR], 1.33 [95% CI, 1.26–1.41] versus HR, 1.09 [95% CI, 1.07–1.11]). Each 10‐mm Hg higher SBP was associated with 12% (HR, 1.12 [95% CI, 1.10–1.13]), 11% (HR, 1.11 [95% CI, 1.10–1.13]), and 20% (HR, 1.20 [95% CI, 1.17–1.22]) higher risk of all composite CVD events, individual CVD, and CVD mortality, respectively. Conclusions There is a significant log‐linear relationship between baseline SBP and the risk of CVD among patients with diabetes mellitus in China. The risk increases from an SBP of 120 mm Hg onward. Age influences this relationship significantly, with younger patients (<50 years) having a greater risk of CVD for a similar rise in SBP as compared with those who are older. These findings suggest that differential target blood pressures stratified by age maybe useful.https://www.ahajournals.org/doi/10.1161/JAHA.119.015771blood pressurecardiovascular diseasediabetes mellitushypertensionmortality
spellingShingle Eric Yuk Fai Wan
Esther Yee Tak Yu
Weng Yee Chin
Ian Chi Kei Wong
Esther Wai Yin Chan
Shiqi Chen
Cindy Lo Kuen Lam
Age‐Specific Associations Between Systolic Blood Pressure and Cardiovascular Disease: A 10‐Year Diabetes Mellitus Cohort Study
Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease
blood pressure
cardiovascular disease
diabetes mellitus
hypertension
mortality
title Age‐Specific Associations Between Systolic Blood Pressure and Cardiovascular Disease: A 10‐Year Diabetes Mellitus Cohort Study
title_full Age‐Specific Associations Between Systolic Blood Pressure and Cardiovascular Disease: A 10‐Year Diabetes Mellitus Cohort Study
title_fullStr Age‐Specific Associations Between Systolic Blood Pressure and Cardiovascular Disease: A 10‐Year Diabetes Mellitus Cohort Study
title_full_unstemmed Age‐Specific Associations Between Systolic Blood Pressure and Cardiovascular Disease: A 10‐Year Diabetes Mellitus Cohort Study
title_short Age‐Specific Associations Between Systolic Blood Pressure and Cardiovascular Disease: A 10‐Year Diabetes Mellitus Cohort Study
title_sort age specific associations between systolic blood pressure and cardiovascular disease a 10 year diabetes mellitus cohort study
topic blood pressure
cardiovascular disease
diabetes mellitus
hypertension
mortality
url https://www.ahajournals.org/doi/10.1161/JAHA.119.015771
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