Abstract
Background
In the U.S. general population, black men experience poorer survival after prostate cancer (CaP) diagnosis compared to white men, and findings may be impacted by unequal access to healthcare. The objective of the study is to investigate racial differences in overall survival (OS) among Department of Defense beneficiaries diagnosed with CaP.
Methods
A retrospective cohort study was conducted utilizing the Automated Central Tumor Registry within the Military Healthcare System, a system designed to provide equal access. Men diagnosed with primary prostate adenocarcinomas between 1990 and 2010 [n = 18,484; 24% Non-Hispanic black (NHB), 76% Non-Hispanic white (NHW)] were followed through 2013 for vital status. Unadjusted Kaplan–Meier estimation curves and multivariable Cox proportional hazards (PH) regression models were used to examine racial differences in OS.
Results
Age-specific Kaplan–Meier analyses showed equivalent OS for NHW and NHB men in all age groups, except for 75+, where NHB had poorer OS (p = 0.0048). Multivariable Cox PH models revealed no significant differences in OS for race (HR 1.02; 95% CI 0.95–1.08), except in men aged ≥ 75 years, where NHB men had poorer OS (HR 1.27; 95% CI 1.08–1.49).
Conclusions
Findings suggest that in a healthcare system designed for equal access, disparities in OS among men diagnosed with CaP may not exist.
Similar content being viewed by others
References
Siegel RL, Miller KD, Jemal A (2016) Cancer statistics. CA Cancer J Clin 66(1):7–30
DeSantis C, Naishadham D, Jemal A (2013) Cancer statistics for African Americans. CA Cancer J Clin 63(3):151–166
Kelly SP et al (2017) Trends in the incidence of fatal prostate cancer in the United States by race. Eur Urol 71(2):195–201
Robbins HA et al (2015) Age at cancer diagnosis for blacks compared with whites in the United States. J Natl Cancer Inst. 107(3)
Freedland SJ, Isaacs WB (2005) Explaining racial differences in prostate cancer in the United States: sociology or biology? Prostate 62(3):243–252
Zeigler-Johnson CM et al (2008) Genetic susceptibility to prostate cancer in men of African descent: implications for global disparities in incidence and outcomes. Can J Urol 15(1):3872–3882
Taksler GB, Keating NL, Cutler DM (2012) Explaining racial differences in prostate cancer mortality. Cancer 118(17):4280–4289
Barocas DA et al (2013) Association between race and follow-up diagnostic care after a positive prostate cancer screening test in the prostate, lung, colorectal, and ovarian cancer screening trial. Cancer 119(12):2223–2229
Berglund A et al (2012) Differences according to socioeconomic status in the management and mortality in men with high risk prostate cancer. Eur J Cancer 48(1):75–84
Friedman DB et al (2009) African American men’s understanding and perceptions about prostate cancer: why multiple dimensions of health literacy are important in cancer communication. J Commun Health 34(5):449–460
Mahal BA et al (2014) Getting back to equal: The influence of insurance status on racial disparities in the treatment of African American men with high-risk prostate cancer. Urol Oncol 32(8):1285–1291
Cullen J et al (2011) Racial/Ethnic patterns in prostate cancer outcomes in an active surveillance cohort. Prostate Cancer 2011:234519
Graham-Steed T et al (2013) ‘Race’ and prostate cancer mortality in equal-access healthcare systems. Am J Med 126(12):1084–1088
Freeman VL et al (2003) Determinants of mortality following a diagnosis of prostate cancer in Veterans Affairs and private sector health care systems. Am J Public Health 93(10):1706–1712
Schreiber D et al (2014) Impact of race in a predominantly African-American population of patients with low/intermediate risk prostate cancer undergoing radical prostatectomy within an equal access care institution. Int Urol Nephrol 46(10):1941–1946
Optenberg SA et al (1995) Race, treatment, and long-term survival from prostate cancer in an equal-access medical care delivery system. JAMA 274(20):1599–1605
Brawn PN et al (1993) Stage at presentation and survival of white and black patients with prostate carcinoma. Cancer 71(8):5
Defense Health Agency (2018) https://www.health.mil.About-MHS. Accessed 1 Oct 2018]
Enewold L et al (2012) Racial variation in tumor stage at diagnosis among Department of Defense beneficiaries. Cancer 118(5):1397–1403. https://doi.org/10.1002/cncr.26208
Lin J et al (2015) Survival among Black and White patients with renal cell carcinoma in an equal-access health care system. Cancer Causes Control 26(7):1019–1026. https://doi.org/10.1007/s10552-015-0594-4
Schinkel JK et al., Overall and recurrence-free survival among black and white bladder cancer patients in an equal-access health system. Cancer Epidemiol, 2016. 42:154–158. https://doi.org/10.1016/j.canep.2016.04.012
Zheng L et al (2012) Lung cancer survival among black and white patients in an equal access health system. Cancer Epidemiol Biomark Prev 21(10):1841–1847. https://doi.org/10.1158/1055-9965.EPI-12-0560
Commission on Cancer, Facility Oncology Registry Data Standards (2015) American College of Surgeons
Commission on Cancer, Cancer Program Standards 2012: Ensuring Patient-Centered Care, in Data Quality (2012) American College of Surgeons
Fritz A et al. (2000) International classification of diseases for oncology. World Health Organization, Geneva
Humphrey PA (2012) Histological variants of prostatic carcinoma and their significance. Histopathology 60(1):59–74
American Joint Committee on Cancer (2002) AJCC cancer staging manual, 6th edn. Springer, New York
Daskivich TJ et al (2015) Racial parity in tumor burden, treatment choice and survival outcomes in men with prostate cancer in the VA healthcare system. Prostate Cancer Prostatic Dis 18(2):104–109
Bill-Axelson A et al (2011) Radical prostatectomy versus watchful waiting in early prostate cancer. N Engl J Med 364(18):1708–1717
Kibel AS et al (2012) Survival among men with clinically localized prostate cancer treated with radical prostatectomy or radiation therapy in the prostate specific antigen era. J Urol 187(4):1259–1265
Moses KA et al (2010) Impact of ethnicity on primary treatment choice and mortality in men with prostate cancer: data from CaPSURE. J Clin Oncol 28(6):1069–1074
Moses KA et al (2016) Racial/ethnic differences in the relative risk of receipt of specific treatment among men with prostate cancer. Urol Oncol 34(9):415 e7–415 e12
Arias E (2014) United States life tables, 2009, in national vital statistics reports. National Center for Health Statistics, Hyattsville, MD, p 63
Powell IJ et al (2013) Genes associated with prostate cancer are differentially expressed in African American and European American men. Cancer Epidemiol Biomark Prev 22(5):891–897
Wallace TA et al (2008) Tumor immunobiological differences in prostate cancer between African-American and European-American men. Cancer Res 68(3):927–936
Farrell J et al (2013) Genetic and molecular differences in prostate carcinogenesis between African American and Caucasian American men. Int J Mol Sci 14(8):15510–15531
Rosen P et al (2012) Differences in frequency of ERG oncoprotein expression between index tumors of Caucasian and African American patients with prostate cancer. Urology 80(4):749–753
Acknowledgments
This project was supported by John P. Murtha Cancer Center, Walter Reed National Military Medical Center via the Uniformed Services University of the Health Sciences under the auspices of the Henry M. Jackson Foundation for the Advancement of Military Medicine. The authors thank the Joint Pathology Center (formerly Armed Forces Institute of Pathology) for providing the data. The authors would like to thank Ms. Elizabeth Butts for her input about the ACTUR and its compliance with the Commission on Cancer.
Disclaimer
The content of this publication is the sole responsibility of the authors and does not necessarily reflect the views or policies of the Uniformed Services University of the Health Sciences (USUHS), the Department of Defense (DoD), or the Departments of the Army, Navy, or Air Force.
Author information
Authors and Affiliations
Corresponding author
Additional information
Publisher’s Note
Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
Rights and permissions
About this article
Cite this article
Alexander, M., Zhu, K., Cullen, J. et al. Race and overall survival in men diagnosed with prostate cancer in the Department of Defense Military Health System, 1990–2010. Cancer Causes Control 30, 627–635 (2019). https://doi.org/10.1007/s10552-019-01163-5
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10552-019-01163-5