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Rigshospitalet - en del af Københavns Universitetshospital
Udgivet

Low-dose aspirin use and endometrial cancer mortality-a Danish nationwide cohort study

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  • Cecilie D Sperling
  • Freija Verdoodt
  • Gitte L Aalborg
  • Christian Dehlendorff
  • Søren Friis
  • Susanne K Kjaer
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BACKGROUND: Accumulating evidence suggests that aspirin use may improve survival in cancer patients, however, for endometrial cancer, epidemiological evidence is limited and results are equivocal. In a nationwide cohort study, we examined the association between post-diagnostic low-dose aspirin use and endometrial cancer mortality.

METHODS: From the Danish Cancer Registry, we identified all women with a primary diagnosis of endometrial cancer. Women diagnosed between 2000 and 2012, aged 30-84 years, who had no history of cancer (except non-melanoma skin cancer) and were alive 1 year after the cancer diagnosis were eligible. We obtained information on pre- and post-diagnostic use (≥1 prescription) of low-dose aspirin, mortality and potential confounding factors from nationwide registries. Using Cox regression models, we estimated adjusted hazard ratios (HRs) and 95% confidence intervals (CIs) for the association between post-diagnostic low-dose aspirin use and endometrial cancer mortality. The exposure was modelled as both time-varying as well as time-fixed within exposure windows of 1 and 5 years.

RESULTS: We identified 6694 endometrial cancer patients with a maximum follow-up of 13 years. In the time-varying analysis, post-diagnostic low-dose aspirin use was associated with a HR of 1.10 (95% CI 0.90-1.33) for endometrial cancer mortality. We found no indication of a dose-response association according to increasing tablet strength, cumulative amount or duration of use, and the HRs were similar for pre-diagnostic and post-diagnostic low-dose aspirin use compared with non-use.

CONCLUSIONS: We found no indication that post-diagnostic low-dose aspirin use was associated with reduced mortality for endometrial cancer; rather our findings suggested a concern for increased mortality.

OriginalsprogEngelsk
TidsskriftInternational Journal of Epidemiology
Vol/bind49
Udgave nummer1
Sider (fra-til)330-337
Antal sider8
ISSN0300-5771
DOI
StatusUdgivet - 1 feb. 2020

Bibliografisk note

© The Author(s) 2019; all rights reserved. Published by Oxford University Press on behalf of the International Epidemiological Association.

ID: 61593974