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Risk of ischaemic cardiovascular events from selective cyclooxygenase-2 inhibitors in osteoarthritis

Cunnington, Marianne, Webb, David, Qizilbash, Nawab, Blum, David, Mander, Adrian ORCID: https://orcid.org/0000-0002-0742-9040, Jonsson Funk, Michele and Weil, John 2008. Risk of ischaemic cardiovascular events from selective cyclooxygenase-2 inhibitors in osteoarthritis. Pharmacoepidemiology and Drug Safety 17 (6) , pp. 601-608. 10.1002/pds.1590

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Abstract

Purpose Most previous observational studies assessing cardiovascular risk associated with Cox‐2 inhibitors (Cox‐2is) used a case control approach, limiting the assessment of absolute risk by disease group and effect of duration of exposure. We conducted a retrospective cohort study in patients with osteoarthritis. Methods Using the Life‐link US claims database, all subjects had at least five years history in the database. Exposure was defined as the first chronic period of Cox‐2i (celecoxib, rofecoxib or valdecoxib) or naproxen use. Non‐users and non‐chronic users of non‐steroidal anti‐inflammatory drug (NSAID)/Cox‐2i within the osteoarthritis cohort served as the reference. The primary outcome was myocardial infarction and ischaemic stroke. Results A cohort of 16 580 subjects were chronically exposed to celecoxib, 9800 received rofecoxib, 2907 received naproxen and 51 539 were non‐chronically exposed controls. With a median follow up of 506 days, there were 2116 ischaemic events for the entire cohort. The strongest predictors of AMI/ ischaemic stroke risk were history of ischaemic stroke (HR 2.34, 2.12–2.59) and age 65+ years (HR 2.28, 2.07–2.52). For rofecoxib, (HR 1.25,1.04–1.50), the attributable risk varied from 3 per 1000 patients years in individuals aged under 65 years with no history of CVD to 19 per 1000 patients years in older individuals with a history of CVD. The hazard ratios did not change over time. Celecoxib and naproxen were not associated with increased risks. Conclusions The attributable risk for rofecoxib varied substantially with the underlying cardiovascular risk profile, being lower in clinical trial than in clinical practice populations. Copyright © 2008 John Wiley & Sons, Ltd.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Medicine
Centre for Trials Research (CNTRR)
Publisher: Wiley
ISSN: 1053-8569
Date of Acceptance: 5 February 2008
Last Modified: 04 Nov 2022 12:28
URI: https://orca.cardiff.ac.uk/id/eprint/123266

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