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Cancer care from oncology subspecialists has doubled since 2008

Dr. Kamal Kant KohliWritten by Dr. Kamal Kant Kohli Published On 2025-08-26T20:30:09+05:30  |  Updated On 26 Aug 2025 8:30 PM IST
Ministry of Health Outlines Cancer Care Measures Based on Latest ICMR Data

Ministry of Health Outlines Cancer Care Measures Based on Latest ICMR Data

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A retrospective cohort study aimed to quantify trends in oncologist subspecialization and assess differences in subspecialized cancer care utilization in the U.S. The researchers found that between 2008 and 2020, oncology subspecialization increased significantly, however, gaps in utilization between high- and low- income areas have grown despite higher cancer mortality in low-income areas. These differences in utilization could reflect systematic barriers to care. The study is published in Annals of Internal Medicine.

Researchers from Harvard T.H. Chan School of Public Health and colleagues studied Medicare claims data from over 3.2 million fee-for-service Medicare beneficiaries initiating chemotherapy between 2008 and 2020. The five most common cancer categories among beneficiaries were breast, gastrointestinal, hematologic, prostate/genitourinary, and thoracic. The researchers assessed trends in subspecialization of oncologists by classifying them based on the proportion of chemotherapy episodes they managed for specific cancer types annually.

To assess changes over time in the proportion of chemotherapy episodes, by cancer type and across hospital referral regions (HRRs), that were treated by subspecialists, the researchers examined the proportion of chemotherapy episodes each year that were managed by a subspecialist of the relevant cancer type. The researchers found that between 2008 and 2020, the proportion of chemotherapy episodes managed by subspecialists increased from 9% to 18%.

The proportion of chemotherapy episodes treated by subspecialists varied across the five most common cancer types in 2008; however, by 2020, the proportion of cancer types managed by subspecialists increased significantly. The gap between the number of chemotherapy episodes managed by subspecialists in the largest HRRs versus smaller HRRs grew significantly between 2008 and 2020, with the largest HRRs having 33.4% of episodes managed by subspecialists, whereas the smallest HRRs had only 9.6%. Most HRRs experienced increases in subspecialist involvement over time; however, HRRs in the rural Mountain West and Northern Great Plains reported fewer than 5% of chemotherapy episodes managed by subspecialists in 2020.

They also found that subspecialist utilization did not align with local cancer burden as measured by county-level mortality, suggesting that areas with higher cancer burden had lower utilization of subspecialist care. While subspecialization within oncology has increased significantly, differences in the utilization of subspecialists mirror broader patterns of delayed adoption of medical innovations among physicians serving rural, low-income, and minority populations.

Reference:

:René Karadakic, Christopher Manz, Geographic Variation in the Utilization of Cancer Care From Subspecialized Medical Oncologists in the United States, 2008 to 2020, Annals of Internal Medicine, https://doi.org/10.7326/ANNALS-25-00102.

Annals of Internal MedicineCancerchemotherapy
Source : Annals of Internal Medicine
Dr. Kamal Kant Kohli
Dr. Kamal Kant Kohli

Dr Kamal Kant Kohli-MBBS, DTCD- a chest specialist with more than 30 years of practice and a flair for writing clinical articles, Dr Kamal Kant Kohli joined Medical Dialogues as a Chief Editor of Medical News. Besides writing articles, as an editor, he proofreads and verifies all the medical content published on Medical Dialogues including those coming from journals, studies,medical conferences,guidelines etc. Email: drkohli@medicaldialogues.in. Contact no. 011-43720751

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