• Jedson R Liggett, Emily A Norris, Toni M Rush, Nicholas M Sicignano, and Christopher Oxner.
• Naval Medical Center Portsmouth, Portsmouth, VA 23708, USA.
• Mil Med. 2023 Nov 8; 188 (Suppl 6): 494502494-502.

BackgroundThe Military Health System (MHS) is a universal health care system, in which health care disparities are theoretically minimized. This study aimed to identify disparities and assess their impact on the initiation of timely treatment for breast cancer within a universally insured population.MethodsA retrospective cohort study was performed to evaluate the treatment of female breast cancer patients ≥18 years of age within the MHS from January 1, 2014, to December 31, 2018. Incident breast cancer was defined as ≥2 breast cancer diagnoses without a prior diagnosis of breast cancer during the three continuous years before index diagnosis. Time from index diagnosis to initial treatment was calculated and dichotomized as receiving treatment within a clinically acceptable time course. Poisson regression was used to estimate relative risk (RR) with 95% CIs.ResultsAmong the 30,761 female breast cancer patients identified in the MHS, only 6% of patients had a prolonged time to initial treatment. Time to initial treatment decreased during the study period from a mean (SD) of 63.2 (152.0) days in 2014 to 37.1 (28.8) days in 2018 (P < 0.0001). Age, region, and military characteristics remained significantly associated with receiving timely treatment even after the adjustment of confounders. Patients 70-79 years old were twice as likely as 18-39 years olds to receive timely treatment (RR: 2.0100, 95% CI, 1.52-2.6563, P < 0.0001). Senior officers and their dependents were more likely to receive timely initial treatment compared to junior enlisted patients and their dependents (RR: 1.5956, 95% CI, 1.2119-2.1005, P = 0.004).ConclusionsThere have been significant improvements in the timely initiation of breast cancer treatment within the MHS. However, demographic and socioeconomic disparities can be identified that affect the timely initiation of therapy.Published by Oxford University Press on behalf of the Association of Military Surgeons of the United States 2023. This work is written by (a) US Government employee(s) and is in the public domain in the US.

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