An even smaller area variation: differing practice patterns among interventional cardiologists within a single high...

Area of Science:

• Cardiology
• Health Services Research
• Medical Practice Variation

Background:

• Variations in medical procedure use are documented, but studies often overlook within-center practice differences.
• Existing research primarily focuses on variations between hospitals or geographic regions.

Purpose of the Study:

• To investigate treatment recommendation variations among interventional cardiologists within a single tertiary care center.
• To determine if practice differences exist among highly trained specialists in a collaborative environment.

Main Methods:

• Utilized data from a local registry for patients with significant coronary artery disease (CAD).
• Employed logistic regression to compare physician recommendations for revascularization versus medical therapy.
• Analyzed decisions between percutaneous coronary intervention (PCI) and coronary artery bypass graft surgery (CABG) using adjusted odds ratios.

Main Results:

• Significant variations in revascularization recommendations were observed among four out of nine physicians compared to a reference physician.
• Odds ratios for revascularization varied from 0.8 to 2.9.
• Differences in recommending CABG over PCI were also noted, with odds ratios ranging from 1.5 to 4.2.

Conclusions:

• Practice variations persist within a single center, even after adjusting for patient characteristics and similar constraints.
• Within-center variations have potential implications for healthcare service delivery and strategic planning.
• Further research is essential to identify and explain the determinants of these practice variations.