Colon cancer survival in the United States by race and stage (2001‐2009): Findings from the CONCORD‐2 study
Open Access
- 5 December 2017
- Vol. 123 (S24), 5014-5036
- https://doi.org/10.1002/cncr.31076
Abstract
BACKGROUND In the first CONCORD study (2008), 5‐year survival for patients diagnosed with colon cancer between 1990 and 1994 in the United States was among the highest in the world (60%), but there were large racial disparities in most participating states. The CONCORD‐2 study (2015) enabled the examination of survival trends between 1995 and 2009 for US states by race and stage. METHODS The authors analyzed data from 37 state population‐based cancer registries, covering approximately 80% of the US population, for patients who were diagnosed with colon cancer between 2001 and 2009 and were followed through 2009. Survival up to 5 years was corrected for background mortality (net survival) using state‐specific and race‐specific life tables and age‐standardized using the International Cancer Survival Standard weights. Survival is presented by race (all, black, white), stage, state, and calendar period (2001‐2003 and 2004‐2009) to account for changes in methods used to collect stage. RESULTS Five‐year net survival increased by 0.9%, from 63.7% between 2001 and 2003 to 64.6% between 2004 and 2009. More black than white patients were diagnosed with distant‐stage disease between 2001 and 2003 (21.5% vs 17.2%) and between 2004 and 2009 (23.3% vs 18.8%). Survival improved for both blacks and whites, but 5‐year net survival was 9‐10% lower for blacks than for whites both between 2001 and 2003 (54.7% vs 64.5%) and between 2004 and 2009 (56.6% vs 65.4%). The absolute difference between blacks and whites decreased by only 1% during the decade. CONCLUSIONS Five‐year net survival from colon cancer increased slightly over time. Survival among blacks diagnosed between 2004 and 2009 had still not reached the level of that among whites diagnosed between 1990 and 1994, some 15 to 20 years earlier. These findings suggest a need for more targeted efforts to improve screening and to ensure timely, appropriate treatment, especially for blacks, to reduce this large and persistent disparity in survival. Cancer 2017;123:5014‐36. Published 2017. This article is a U.S. Government work and is in the public domain in the USA.Keywords
This publication has 40 references indexed in Scilit:
- New roles for public health in cancer screeningCA: A Cancer Journal for Clinicians, 2012
- Contribution of Screening and Survival Differences to Racial Disparities in Colorectal Cancer RatesCancer Epidemiology, Biomarkers & Prevention, 2012
- On Estimation in Relative SurvivalBiometrics, 2011
- Comprehensive cancer control programs and coalitions: partnering to launch successful colorectal cancer screening initiativesCancer Causes & Control, 2010
- Racial disparities in colorectal cancer survivalCancer, 2010
- Improved Survival in Metastatic Colorectal Cancer Is Associated With Adoption of Hepatic Resection and Improved ChemotherapyJournal of Clinical Oncology, 2009
- Cancer survival in five continents: a worldwide population-based study (CONCORD)The Lancet Oncology, 2008
- Is There a Difference in Survival Between Right- Versus Left-Sided Colon Cancers?Annals of Surgical Oncology, 2008
- Standard cancer patient population for age standardising survival ratiosEuropean Journal of Cancer, 2004
- Levamisole and Fluorouracil for Adjuvant Therapy of Resected Colon CarcinomaThe New England Journal of Medicine, 1990