Abstract 4820: Comparison of Black and White patients in treatment for papillary thyroid cancer in an equal access health system
Authors: Eaglehouse Yvonne L. , Darmon Sarah , Shriver Craig D. , Zhu Kangmin 
Published: March 2024

Introduction: In the U.S., Black patients with papillary thyroid cancer (PTC) are less likely to receive treatment than non-Hispanic White patients. Access to care and insurance status may be related to these disparities. We aimed to compare Black and White patients in receipt of cancer care for PTC in the equal access Military Health System.

Materials and Methods: We used the MilCanEpi database to identify a cohort of men and women aged 18 or older who were diagnosed with PTC between January 1, 1998 and December 31, 2014. Patients were assessed for treatment by surgery (e.g., lobectomy, thyroidectomy), adjuvant radioactive iodine (RAI), or active surveillance. Treatment appropriate for risk status (low-risk or high-risk) was compared between non-Hispanic White and Black patients using multivariable logistic regression and expressed as adjusted odds ratios (aOR) with 95% confidence intervals (CIs).

Results: Among 3,511 patients with PTC, 65.0% White and 65.5% Black received surgical treatment (aOR 0.97, 95% CI 0.80-1.18 for Black vs. White). For patients with low-risk PTC, overall receipt of either surgery or active surveillance (aOR 0.86, 95% CI 0.67-1.10 for Black vs. White) was similar between races. For patients with high-risk PTC, overall receipt of surgery (aOR 1.19, 95% CI 0.71-2.01) or adjuvant RAI (aOR 1.44, 95% CI 0.60-3.44) was similar for Black compared to White patients.

Conclusions: In an equal access health system, there were no overall racial differences in receipt of surgical treatment for PTC. Further, in analysis by risk status, there were no significant racial differences in receipt of active surveillance for low-risk PTC nor receipt of adjuvant RAI for high-risk PTC. This suggests the role of access to care in reducing racial disparities in treatment for PTC observed in the general U.S. population.

Funding and Acknowledgement: The authors thank the Joint Pathology Center (JPC) for providing the DoD cancer registry data and the Defense Health Agency (DHA) for providing the MHS data repository (MDR) data. This project was supported by the Murtha Cancer Center Research Program (MCCRP) of the Department of Surgery, Uniformed Services University of the Health Sciences (USUHS) under the auspices of the Henry M. Jackson Foundation for the Advancement of Military Medicine (HJF, Inc.), grant numbers HHU0001-16-2-0014 and HU0001-18-2-0032 awarded to C.S.

Disclaimer: The contents of this abstract are the sole responsibility of the authors and do not necessarily reflect the views, assertions, opinions, or policies of the Uniformed Services University of the Health Sciences, the Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc., the Department of Defense, or the Departments of the Army, Navy, or Air Force. Mention of trade names, commercial products, or organizations does not imply endorsement by the U.S. government.

Citation Format: Yvonne L. Eaglehouse, Sarah Darmon, Craig D. Shriver, Kangmin Zhu. Comparison of Black and White patients in treatment for papillary thyroid cancer in an equal access health system [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2024; Part 1 (Regular Abstracts); 2024 Apr 5-10; San Diego, CA. Philadelphia (PA): AACR; Cancer Res 2024;84(6_Suppl):Abstract nr 4820.