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No socioeconomic inequalities in colorectal cancer survival within a randomised clinical trial

No socioeconomic inequalities in colorectal cancer survival within a randomised clinical trial
No socioeconomic inequalities in colorectal cancer survival within a randomised clinical trial
There is strong evidence that colorectal cancer survival differs between socioeconomic groups. We analysed data on 2481 patients diagnosed during 1989–1997 and recruited to a randomised controlled clinical trial (AXIS, ISRCTN32414363) of chemotherapy and radiotherapy for colorectal cancer. Crude and relative survival at 1 and 5 years was estimated in five categories of socioeconomic deprivation. Multiple imputation was used to account for missing data on tumour stage. A multivariable fractional polynomial model was fitted to estimate the excess hazard of death in each deprivation category, adjusting for the confounding effects of age, stage, cancer site (colon, rectum) and sex, using generalised linear models. Relative survival in the trial patients was higher than in the general population of England and Wales. The socioeconomic gradient in survival was much smaller than that seen for colorectal cancer patients in the general population, both at 1 year ?3.2% (95% CI ?7.3 to 1.0%, P=0.14) and at 5 years ?1.7% (95% CI ?8.3 to 4.9%, P=0.61). Given equal treatment, colorectal cancer survival in England and Wales does not appear to depend on socioeconomic status, suggesting that the socioeconomic gradient in survival in the general population could well be due to health-care system factors.
colorectal cancer, rectum cancer, cancer survival, deprivation, cancer registries
0007-0920
1923-1928
Nur, U.
664d383e-7e2b-4080-9caf-6fb97334ecd8
Rachet, B.
1b95eff2-de33-4933-9291-f44870912b39
Parmar, M.K.B.
44634dd0-3f2b-4263-9f16-308a9e9260b8
Sydes, M.R.
bec44176-a377-4bfb-87c1-f5397426fcf4
Cooper, N.
c4ceb9a4-9daa-42b5-b618-fbe5bb7bcce4
Lepage, C.
1d42f50c-3eab-4e91-8da1-418563eaf5b3
Northover, J.M.A.
0e7d05c2-b48c-45eb-b568-9fdc0a7e4914
James, R.
b2bf9dc8-4cb2-41cf-b77c-6b042856f60f
Coleman, M.P.
83b02e3e-fc40-4bdc-8a34-a1789aff81a1
Primrose, J.N.
d85f3b28-24c6-475f-955b-ec457a3f9185
Nur, U.
664d383e-7e2b-4080-9caf-6fb97334ecd8
Rachet, B.
1b95eff2-de33-4933-9291-f44870912b39
Parmar, M.K.B.
44634dd0-3f2b-4263-9f16-308a9e9260b8
Sydes, M.R.
bec44176-a377-4bfb-87c1-f5397426fcf4
Cooper, N.
c4ceb9a4-9daa-42b5-b618-fbe5bb7bcce4
Lepage, C.
1d42f50c-3eab-4e91-8da1-418563eaf5b3
Northover, J.M.A.
0e7d05c2-b48c-45eb-b568-9fdc0a7e4914
James, R.
b2bf9dc8-4cb2-41cf-b77c-6b042856f60f
Coleman, M.P.
83b02e3e-fc40-4bdc-8a34-a1789aff81a1
Primrose, J.N.
d85f3b28-24c6-475f-955b-ec457a3f9185

Nur, U., Rachet, B., Parmar, M.K.B., Sydes, M.R., Cooper, N., Lepage, C., Northover, J.M.A., James, R., Coleman, M.P. and Primrose, J.N. (2008) No socioeconomic inequalities in colorectal cancer survival within a randomised clinical trial. British Journal of Cancer, 99 (11), 1923-1928. (doi:10.1038/sj.bjc.6604743).

Record type: Article

Abstract

There is strong evidence that colorectal cancer survival differs between socioeconomic groups. We analysed data on 2481 patients diagnosed during 1989–1997 and recruited to a randomised controlled clinical trial (AXIS, ISRCTN32414363) of chemotherapy and radiotherapy for colorectal cancer. Crude and relative survival at 1 and 5 years was estimated in five categories of socioeconomic deprivation. Multiple imputation was used to account for missing data on tumour stage. A multivariable fractional polynomial model was fitted to estimate the excess hazard of death in each deprivation category, adjusting for the confounding effects of age, stage, cancer site (colon, rectum) and sex, using generalised linear models. Relative survival in the trial patients was higher than in the general population of England and Wales. The socioeconomic gradient in survival was much smaller than that seen for colorectal cancer patients in the general population, both at 1 year ?3.2% (95% CI ?7.3 to 1.0%, P=0.14) and at 5 years ?1.7% (95% CI ?8.3 to 4.9%, P=0.61). Given equal treatment, colorectal cancer survival in England and Wales does not appear to depend on socioeconomic status, suggesting that the socioeconomic gradient in survival in the general population could well be due to health-care system factors.

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More information

Published date: 28 November 2008
Keywords: colorectal cancer, rectum cancer, cancer survival, deprivation, cancer registries

Identifiers

Local EPrints ID: 145215
URI: http://eprints.soton.ac.uk/id/eprint/145215
ISSN: 0007-0920
PURE UUID: 8eaa4e4f-5928-48b7-aa94-e9f9df5e165d
ORCID for J.N. Primrose: ORCID iD orcid.org/0000-0002-2069-7605

Catalogue record

Date deposited: 16 Apr 2010 11:55
Last modified: 14 Mar 2024 02:37

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Contributors

Author: U. Nur
Author: B. Rachet
Author: M.K.B. Parmar
Author: M.R. Sydes
Author: N. Cooper
Author: C. Lepage
Author: J.M.A. Northover
Author: R. James
Author: M.P. Coleman
Author: J.N. Primrose ORCID iD

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