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Updated: Dec 7, 2025

Establishing a Competing Risk Regression Nomogram Model for Survival Data
Published on: October 23, 2020
Geographic variations in specialty distribution and specialty-related mortality
John D Goodson1, Sara Shahbazi2
1Harvard Medical School, Division of General Internal Medicine, Department of Medicine, Massachusetts General Hospital, Boston, MA, 02114, USA.
Higher numbers of specialty physicians in counties are linked to lower death rates for specific conditions. This study found improved outcomes in areas with greater access to specialists like endocrinologists and neurologists.
Area of Science:
- Health Services Research
- Public Health
- Epidemiology
Background:
- Geographic disparities in healthcare access exist for specialized medical services.
- The availability of specialty physicians may influence patient outcomes and mortality rates.
Purpose of the Study:
- To investigate the association between specialty physician density and mortality rates for specific conditions.
- To determine if increased access to specialists correlates with reduced deaths in counties across the United States.
Main Methods:
- Utilized data from the Centers for Disease Control and Prevention (CDC) and the Centers for Medicare and Medicaid Services (CMS).
- Analyzed the relationship between specialty physician distribution and mortality rates, adjusting for demographic and health indicators.
- Compared mortality rates in counties with the highest quartile of physician density to those with the lowest quartile.
Main Results:
- Counties with the highest density of specialty physicians exhibited lower mortality rates compared to counties with the lowest density.
- Specific inverse associations were observed for endocrinology (10.7 fewer deaths/100,000), infectious disease (2.9 fewer deaths/100,000), and neurology (7.2 fewer deaths/100,000).
Conclusions:
- There is an inverse correlation between the geographic distribution of select medical specialties and population mortality.
- Increasing the density of specialty physicians in underserved areas may reduce preventable deaths and improve public health outcomes.
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