Hip fractures risks in edoxaban versus warfarin users: A propensity score-matched population-based cohort study with competing risk analyses

Journal article


Zhou, Jiandong, Lee, Sharen, Liu, Xuejin, Iltaf Satti, Danish, Tai Loy Lee, Teddy, Hou In Chou, Oscar, Chang, Carlin, Roever, Leonardo, Tak Wong, Wing, Ka Chung Wai, Abraham, Liu, Tong, Zhang, Qingpeng and Tse, Gary 2021. Hip fractures risks in edoxaban versus warfarin users: A propensity score-matched population-based cohort study with competing risk analyses. Bone. 156, p. 116303. https://doi.org/S8756-3282(21)00469-5
AuthorsZhou, Jiandong, Lee, Sharen, Liu, Xuejin, Iltaf Satti, Danish, Tai Loy Lee, Teddy, Hou In Chou, Oscar, Chang, Carlin, Roever, Leonardo, Tak Wong, Wing, Ka Chung Wai, Abraham, Liu, Tong, Zhang, Qingpeng and Tse, Gary
AbstractThe three direct oral anticoagulants (DOAC), rivaroxaban, apixaban and dabigatran have been associated with lower risks of fractures compared to warfarin. However, no large scale studies have explored the associations with the newest DOAC, edoxaban, with fracture risk. The present study aims to elucidate the effects of edoxaban on the risk of hip fracture amongst elderly patients by comparing the incidence of new onset hip fracture between edoxaban and warfarin users in a Chinese population. This was a retrospective population-based cohort study of patients with edoxaban or warfarin use between January 1st, 2016 and December 31st, 2019 in Hong Kong, China. Patients with less than one-month exposure, medication switching between warfarin and edoxaban, those who died within 30 days after drug exposure, prior human immunodeficiency virus infection, age <50 years old, and those with prior hip fractures were excluded. Propensity score matching (1:2) between edoxaban and warfarin users using the nearest neighbour method was performed based on demographics, prior comorbidities, and use of different medications. The study outcomes were new onset hip fractures, medically attended falls and all-cause mortality. A total of 5014 patients including 579 edoxaban users and 4435 warfarin users (median age: 70 years old [interquartile range (IQR): 62-79], 56.66% males) with a median follow-up of 637.5 (IQR: 320-1073) days were included. In the matched cohort, edoxaban users had significantly lower rates of new onset hip fractures, medically attended falls and all-cause mortality. The protective value of edoxaban use against new onset hip fracture (hazard ratio [HR]: 0.13, 95% confidence interval [CI]: [0.03-0.54], p = 0.0051), medically attended falls (HR: 0.47, [0.29-0.75], p = 0.0018) and all-cause mortality (HR: 0.61, [0.42-0.87], p = 0.0059) in comparison to warfarin use persisted after matching. The significant relationship between edoxaban use and lower fracture risk was preserved in all sensitivity analyses using different approaches using the propensity score. Edoxaban use is associated with lower risks of new onset hip fractures, medically attended falls and mortality risks compared to warfarin after propensity score matching. [Abstract copyright: Copyright © 2021 Elsevier Inc. All rights reserved.]
KeywordsEdoxaban; Osteoporotic; Fracture; Warfarin
Year2021
JournalBone
Journal citation156, p. 116303
PublisherElsevier
ISSN1873-2763
Digital Object Identifier (DOI)https://doi.org/S8756-3282(21)00469-5
https://doi.org/10.1016/j.bone.2021.116303
Official URLhttps://www.sciencedirect.com/science/article/abs/pii/S8756328221004695
Publication dates
Online29 Dec 2021
Publication process dates
Accepted17 Dec 2021
Deposited17 Jan 2022
Output statusPublished
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https://repository.canterbury.ac.uk/item/901y0/hip-fractures-risks-in-edoxaban-versus-warfarin-users-a-propensity-score-matched-population-based-cohort-study-with-competing-risk-analyses

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