Statin Treatment and Clinical Outcomes of Heart Failure Among Africans: An Inverse Probability Treatment Weighted Analysis

BackgroundRandomized control trials of statins have not demonstrated significant benefits in outcomes of heart failure (HF). However, randomized control trials may not always be generalizable. The aim was to determine whether statin and statin type–lipophilic or –hydrophilic improve long‐term outcom...

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Main Authors: Kwadwo Osei Bonsu, Isaac Kofi Owusu, Kwame Ohene Buabeng, Daniel D. Reidpath, Amudha Kadirvelu
Format: Article
Language:English
Published: Wiley 2017-04-01
Series:Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease
Subjects:
Online Access:https://www.ahajournals.org/doi/10.1161/JAHA.116.004706
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author Kwadwo Osei Bonsu
Isaac Kofi Owusu
Kwame Ohene Buabeng
Daniel D. Reidpath
Amudha Kadirvelu
author_facet Kwadwo Osei Bonsu
Isaac Kofi Owusu
Kwame Ohene Buabeng
Daniel D. Reidpath
Amudha Kadirvelu
author_sort Kwadwo Osei Bonsu
collection DOAJ
description BackgroundRandomized control trials of statins have not demonstrated significant benefits in outcomes of heart failure (HF). However, randomized control trials may not always be generalizable. The aim was to determine whether statin and statin type–lipophilic or –hydrophilic improve long‐term outcomes in Africans with HF. Methods and ResultsThis was a retrospective longitudinal study of HF patients aged ≥18 years hospitalized at a tertiary healthcare center between January 1, 2009 and December 31, 2013 in Ghana. Patients were eligible if they were discharged from first admission for HF (index admission) and followed up to time of all‐cause, cardiovascular, and HF mortality or end of study. Multivariable time‐dependent Cox model and inverse‐probability‐of‐treatment weighting of marginal structural model were used to estimate associations between statin treatment and outcomes. Adjusted hazard ratios were also estimated for lipophilic and hydrophilic statin compared with no statin use. The study included 1488 patients (mean age 60.3±14.2 years) with 9306 person‐years of observation. Using the time‐dependent Cox model, the 5‐year adjusted hazard ratios with 95% CI for statin treatment on all‐cause, cardiovascular, and HF mortality were 0.68 (0.55–0.83), 0.67 (0.54–0.82), and 0.63 (0.51–0.79), respectively. Use of inverse‐probability‐of‐treatment weighting resulted in estimates of 0.79 (0.65–0.96), 0.77 (0.63–0.96), and 0.77 (0.61–0.95) for statin treatment on all‐cause, cardiovascular, and HF mortality, respectively, compared with no statin use. ConclusionsAmong Africans with HF, statin treatment was associated with significant reduction in mortality.
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spelling doaj.art-fd32b1a28e0f45c2bbf3b0f62ed114ca2022-12-22T02:39:34ZengWileyJournal of the American Heart Association: Cardiovascular and Cerebrovascular Disease2047-99802017-04-016410.1161/JAHA.116.004706Statin Treatment and Clinical Outcomes of Heart Failure Among Africans: An Inverse Probability Treatment Weighted AnalysisKwadwo Osei Bonsu0Isaac Kofi Owusu1Kwame Ohene Buabeng2Daniel D. Reidpath3Amudha Kadirvelu4School of Medicine and Health Sciences, Monash University, Bandar Sunway, MalaysiaDirectorate of Medicine, Komfo Anokye Teaching Hospital, Kumasi, GhanaDepartment of Pharmacy Practice, College of Health Sciences, Kwame Nkrumah University of Science and Technology, Kumasi, GhanaSchool of Medicine and Health Sciences, Monash University, Bandar Sunway, MalaysiaSchool of Medicine and Health Sciences, Monash University, Bandar Sunway, MalaysiaBackgroundRandomized control trials of statins have not demonstrated significant benefits in outcomes of heart failure (HF). However, randomized control trials may not always be generalizable. The aim was to determine whether statin and statin type–lipophilic or –hydrophilic improve long‐term outcomes in Africans with HF. Methods and ResultsThis was a retrospective longitudinal study of HF patients aged ≥18 years hospitalized at a tertiary healthcare center between January 1, 2009 and December 31, 2013 in Ghana. Patients were eligible if they were discharged from first admission for HF (index admission) and followed up to time of all‐cause, cardiovascular, and HF mortality or end of study. Multivariable time‐dependent Cox model and inverse‐probability‐of‐treatment weighting of marginal structural model were used to estimate associations between statin treatment and outcomes. Adjusted hazard ratios were also estimated for lipophilic and hydrophilic statin compared with no statin use. The study included 1488 patients (mean age 60.3±14.2 years) with 9306 person‐years of observation. Using the time‐dependent Cox model, the 5‐year adjusted hazard ratios with 95% CI for statin treatment on all‐cause, cardiovascular, and HF mortality were 0.68 (0.55–0.83), 0.67 (0.54–0.82), and 0.63 (0.51–0.79), respectively. Use of inverse‐probability‐of‐treatment weighting resulted in estimates of 0.79 (0.65–0.96), 0.77 (0.63–0.96), and 0.77 (0.61–0.95) for statin treatment on all‐cause, cardiovascular, and HF mortality, respectively, compared with no statin use. ConclusionsAmong Africans with HF, statin treatment was associated with significant reduction in mortality.https://www.ahajournals.org/doi/10.1161/JAHA.116.004706Africansinverse probability treatment weightingoutcomerace and ethnicitystatin therapy
spellingShingle Kwadwo Osei Bonsu
Isaac Kofi Owusu
Kwame Ohene Buabeng
Daniel D. Reidpath
Amudha Kadirvelu
Statin Treatment and Clinical Outcomes of Heart Failure Among Africans: An Inverse Probability Treatment Weighted Analysis
Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease
Africans
inverse probability treatment weighting
outcome
race and ethnicity
statin therapy
title Statin Treatment and Clinical Outcomes of Heart Failure Among Africans: An Inverse Probability Treatment Weighted Analysis
title_full Statin Treatment and Clinical Outcomes of Heart Failure Among Africans: An Inverse Probability Treatment Weighted Analysis
title_fullStr Statin Treatment and Clinical Outcomes of Heart Failure Among Africans: An Inverse Probability Treatment Weighted Analysis
title_full_unstemmed Statin Treatment and Clinical Outcomes of Heart Failure Among Africans: An Inverse Probability Treatment Weighted Analysis
title_short Statin Treatment and Clinical Outcomes of Heart Failure Among Africans: An Inverse Probability Treatment Weighted Analysis
title_sort statin treatment and clinical outcomes of heart failure among africans an inverse probability treatment weighted analysis
topic Africans
inverse probability treatment weighting
outcome
race and ethnicity
statin therapy
url https://www.ahajournals.org/doi/10.1161/JAHA.116.004706
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