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Variation in the risk of venous thromboembolism in people with colorectal cancer: a population-based cohort study from England

Walker, A.J.; West, Joe; Card, Timothy R.; Humes, David; Grainge, Matthew J.

Authors

A.J. Walker

JOE WEST JOE.WEST@NOTTINGHAM.AC.UK
Professor of Epidemiology

Dr TIM CARD tim.card@nottingham.ac.uk
Clinical Associate Professor

DAVID HUMES david.humes@nottingham.ac.uk
Clinical Associate Professor

Matthew J. Grainge



Abstract

BACKGROUND: Patients with colorectal cancer are at high risk of developing venous thromboembolism (VTE), and recent international guidelines have advised extended prophylaxis for some of these patients following surgery or during chemotherapy. However, our understanding of which patients are at increased risk, and to what extent, is limited.

OBJECTIVES: To determine absolute and relative rates of VTE among patients with colorectal cancer according to Dukes stage, surgical intervention, and chemotherapy.

METHODS: We analyzed data from four linked databases from 1997 to 2006: the Clinical Practice Research Datalink, linked to Hospital Episode Statistics, Cancer Registry data, and Office for National Statistics cause of death data, all from England. Rates were compared by the use of Cox regression.

RESULTS: There were 10 309 patients with colorectal cancer, and 555 developed VTE (5.4%). The incidence varied by Dukes stage, being three-fold higher among Dukes D patients than among Dukes A patients (hazard ratio [HR] 3.08, 95% confidence interval [CI] 1.95–4.84), and 40% higher for those receiving chemotherapy than for those not receiving chemotherapy (HR 1.39, 95% CI 1.14–1.69). The risk following surgery varied by stage of disease and chemotherapy, with Dukes A patients having a low incidence of VTE (0.74%; 95% CI 0.28–1.95) at 6 months, with all events occurring within 28 days of surgery, as compared with Dukes B and Dukes C patients, whose risk at 6 months was ∼ 2%.

CONCLUSION: Twenty-eight days of prophylaxis following surgery for colorectal cancer is appropriate for Dukes A patients. However, Dukes B and Dukes C patients receiving postoperative chemotherapy have a longer duration of risk.

Citation

Walker, A., West, J., Card, T. R., Humes, D., & Grainge, M. J. (2014). Variation in the risk of venous thromboembolism in people with colorectal cancer: a population-based cohort study from England. Journal of Thrombosis and Haemostasis, 12(5), https://doi.org/10.1111/jth.12533

Journal Article Type Article
Acceptance Date Feb 15, 2014
Online Publication Date Feb 21, 2014
Publication Date May 22, 2014
Deposit Date Aug 30, 2016
Publicly Available Date Aug 30, 2016
Journal Journal of Thrombosis and Haemostasis
Print ISSN 1538-7933
Electronic ISSN 1538-7836
Publisher Wiley
Peer Reviewed Peer Reviewed
Volume 12
Issue 5
DOI https://doi.org/10.1111/jth.12533
Keywords chemotherapy; colorectal cancer; colorectal
surgery; incidence; venous thromboembolism.
Public URL http://eprints.nottingham.ac.uk/id/eprint/36119
Publisher URL http://onlinelibrary.wiley.com/doi/10.1111/jth.12533/abstract
Copyright Statement Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by-nc-nd/4.0

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Copyright Statement
Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by-nc-nd/4.0





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