Association between Temporal Changes in Primary Care Workforce and Patient Outcomes.

Area of Science:

• Health Services Research
• Primary Care Medicine
• Health Outcomes Research

Background:

• The primary care workforce is crucial for healthcare delivery.
• Changes in the primary care workforce may impact patient outcomes.
• Understanding these associations is vital for healthcare policy and resource allocation.

Purpose of the Study:

• To investigate the relationship between temporal changes in the primary care workforce and outcomes for Medicare beneficiaries.
• To assess how the density and clinical effort of primary care physicians influence mortality, hospitalizations, and emergency department visits.

Main Methods:

• Utilized data from 2001 and 2011 American Medical Association Masterfiles and Medicare claims.
• Calculated primary care physician density (per capita) and Medicare primary care full-time equivalents (FTEs) per 10,000 beneficiaries.
• Employed Poisson regression models to analyze associations between workforce changes and patient outcomes (mortality, ACSC hospitalizations, ED visits).

Main Results:

• An increase of one primary care physician per 10,000 population correlated with significant reductions in deaths and ACSC hospitalizations.
• A rise in one Medicare primary care FTE per 10,000 beneficiaries was associated with substantial decreases in deaths, ACSC hospitalizations, and ED visits.
• All observed associations were statistically significant (p < .05).

Conclusions:

• Medicare beneficiaries experienced improved outcomes with an increased number of primary care physicians.
• Greater clinical effort from primary care physicians was also linked to better patient health outcomes.
• Findings underscore the positive impact of a robust primary care system on Medicare patient health.