Table 6

Comparison of baseline characteristics of patients with the composite end point and all others waiting out of hospital

Composite end point6-150 (n = 142)All others out of hospital (n = 559)Confidence intervalp value
Mean (SD) age (years)61.6 (10.0)61.6 (8.9)0.9
Male sex77%74% −4.8 to 11.20.4
Severity of disease
Left main10%16%−12.0 to 1.20.09
 1 to 2 vessel disease excluding PLAD19%18% −6.1 to 8.20.77
 2 to 3 vessel disease including PLAD19%14% −0.87 to 12.30.10
 3 vessel disease excluding PLAD50%51%−10.4 to 8.10.80
Class III or IV angina78%63%  7.1 to 24.70.0002
Left ventricular ejection fraction
 > 50%81%86%−12.9 to 1.150.11
 35 to 50%15%10% −0.84 to 11.50.10
 < 35%4%4% −3.2 to 4.30.7
 Missing data15%11%
Smoking
 Never31%34%−12.2 to 5.60.46
 Past52%55%−12.2 to 6.50.55
 Current17%11%  0.03 to 12.30.06
Hypertension51%41%  1.7 to 20.10.02
Diabetes16%16% −7.3 to 6.30.89
Previous myocardial infarction45%45% −9.3 to 9.20.98
Previous CABG19%9%−16.3 to −4.70.001
Mean (SD) New Zealand score46.0 (11.8)45.0 (12.7)0.34
Mean (SD) Ontario score5.2 (0.69)5.2 (0.74)0.71
Median (IQR) waiting time88.5 (34 to 260)153 (44 to 441)0.0005
  • 6-150 Composite end point of death or non-fatal myocardial infarction or cardiac readmission. CABG, coronary artery bypass grafting; PLAD, proximal left anterior descending coronary artery; IQR, interquartile range.