Sex differences in access to coronary revascularization after cardiac catheterization: importance of detailed...

Area of Science:

• Cardiovascular Medicine
• Health Services Research
• Medical Statistics

Background:

• Conflicting evidence exists regarding sex-based disparities in cardiac procedure access.
• Some studies suggest gender bias, while others find no significant differences.

Purpose of the Study:

• To investigate sex-based differences in rates of percutaneous coronary intervention (PCI) or coronary artery bypass graft (CABG) surgery.
• To compare revascularization rates in men and women following cardiac catheterization.

Main Methods:

• A prospective cohort study was conducted in Alberta, Canada.
• Data from 21,816 individuals undergoing cardiac catheterization between 1995 and 1998 were analyzed.
• Revascularization rates (PCI or CABG) within one year were assessed, with unadjusted, partially adjusted, and fully adjusted analyses.

Main Results:

• Unadjusted analysis showed lower revascularization rates in women (RR 0.67).
• After full adjustment for clinical variables (e.g., disease extent, ejection fraction), the relative risk for any revascularization became 0.98, indicating no significant sex difference.
• Similar trends were observed for PCI and CABG surgery individually.

Conclusions:

• Clinical variables fully account for observed sex differences in revascularization rates post-cardiac catheterization.
• Interpreting access to care data without comprehensive clinical adjustment can lead to misleading conclusions.
• Caution is advised when using limited clinical data to assess healthcare access disparities.