Previous studies have shown that the rate of coronary artery bypass graft (CABG) surgery is much higher in New York State than in Ontario.
To compare the service context and clinical characteristics of patients having CABG surgery in New York and Ontario.
Retrospective analysis of data from cardiac surgery registries in New York and Ontario.
All 16,690 patients in New York and 5517 patients in Ontario who had isolated CABG surgery in 1993.
Clinical characteristics of patients having CABG surgery and rates of CABG surgery by coronary anatomy.
The overall age-adjusted rate of isolated CABG surgery was 1.79 times (95% CI, 1.74 to 1.85) greater in New York than in Ontario. Patients who had CABG surgery in New York were more likely to be elderly and female and to have recently had myocardial infarction (P
Notes
Comment In: Ann Intern Med. 1997 Aug 1;127(3):244-59245239