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Military Health System

Colon cancer lymph node evaluation among military health system beneficiaries: an analysis by race/ethnicity.

Publication Status: Published

Sponsoring Organization: Defense Health Agency (formerly TRICARE Management Activity)

Sponsoring Office: Walter Reed National Military Medical Center

Congressionally Mandated: No

Funding Source: Defense Health Agency (formerly TRICARE Management Activity)

Release Date/Publication: January 01, 2015

Principle Investigator Status: Government

Primary DoD Data Source: Automated Central Tumor Registry

Secondary DoD Data Source:

Abstract

BACKGROUND:
The number of lymph nodes examined during colon cancer surgery falls below nationally recommended guidelines in the general population, with Blacks and Hispanics less likely to have adequate nodal evaluation in comparison to Whites. The Department of Defense's (DoD) Military Health System (MHS) provides equal access to medical care for its beneficiaries, regardless of racial/ethnic background. This study aimed to investigate whether racial/ethnic treatment differences exist in the MHS, an equal-access medical care system.

METHODS:
Linked data from the DoD cancer registry and administrative claims databases were used and included 2,155 colon cancer cases. Multivariate logistic regression assessed the association between race/ethnicity and the number of lymph nodes examined (<12 and ≥12) overall and for stratified analyses.

RESULTS:
No overall racial/ethnic differences in the number of lymph nodes examined was identified. Further stratified analyses yielded similar results, except potential racial/ethnic differences were found among persons with poorly differentiated tumors, where non-Hispanic Blacks tended to be less likely to have ≥12 lymph nodes dissected (odds ratio 0.34; 95 % confidence interval 0.14-0.80; p = 0.01) compared with non-Hispanic Whites.

CONCLUSION:
Racial/ethnic disparities in the number of lymph nodes evaluated among patients with colon cancer were not apparent in an equal-access healthcare system. However, among poorly differentiated tumors there might be racial/ethnic differences in nodal yield, suggesting the possible effects of factors other than access to healthcare.

Citation:

Gill AA, Zahm SH, Shriver CD, Stojadinovic A, McGlynn KA, Zhu K. Colon cancer lymph node evaluation among military health system beneficiaries: an analysis by race/ethnicity. Ann Surg Oncol. 2015 Jan;22(1):195-202

Last Updated: February 21, 2019
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