Table 1. Baseline demographic and procedural characteristics for total study population comparing CABG and PCI cohorts.

	Total (n = 6682)	CABG (n = 4388)	PCI (n = 2294)	p value
Year of procedure
2004–2008	36.1	35.6	37.1	0.225
2009–2015	63.9	64.4	62.9	0.225
Clinical factors
Age (years)	65(57,74)	66(58,74)	65(57,74)	0.012
Female	19.5	18.3	22.0	<0.001
PVD	8.1	10.6	2.3	<0.001
Renal disease *	2.8	2.2	4.4	<0.001
Previous CVA	5.1	6.3	2.2	<0.002
Previous MI	41.4	44.0	36.3	<0.001
Previous revascularization	29.9	17.1	54.6	<0.001
Diabetes	25.2	27.2	21.0	<0.001
Hypertension	73.4	80.2	57.4	<0.001
Smoking †	12.6	10.6	17.6	<0.001
Severe LV function (EF≤30%)	5.2	4.7	7.0	0.002
Presentation
Stable	60.0	62.9	54.5	<0.001
CCS	3(2,3)	3(2,3)	3(2,3)	0.913
CCS 1–2	49.5	49.7	49.1	0.688
CCS 3–4	50.5	50.3	50.9	0.688
NYHA	2(1,3)	2(2,3)	2(1,3)	<0.001
NYHA 1–2	69.4	68.9	70.3	0.270
NYHA 3–4	30.6	31.1	29.7	0.270
Cardiogenic shock	2.1	0.8	4.6	<0.001
Intubated	1.1	0.3	2.6	<0.001
IABP use #	4.8	7.8	2.8	<0.001
Coronary anatomy §
LMS	25.9	28.8	20.4	<0.001
Number of diseased vessels	3(2,3)	3(2,3)	2(2,3)	<0.001
Number of vessels treated	2(2,3)	2(2,3)	2(2,2)	<0.001

Abbreviations: CVA, cerebrovascular accident; MI, myocardial infarction; PVD, peripheral vascular disease; IABP, intra-aortic balloon pump; LMS, left main stem artery; LV, left ventricle; NYHA, New York Heart Association; and CCS, Canadian Cardiovascular Society. Discrete variables are presented as percentages and compared using the Z-test (2-tailed); Continuous data presented as medians (25% IQ, 75% IQ) and compared using the Mann-Whitney U-test (2-tailed).

* Renal disease was defined as serum creatinine >150mmol/l or renal replacement therapy.

^† Smoking was defined as smoking of ≥1 cigarettes/day and had smoked in the month preceding PCI/CABG;

^§ A diseased epicardial coronary vessel was defined as having a >70% coronary stenosis by visual estimation;

^# IABP insertion was either before or during procedure. Data with regards to timing of IABP insertion was not available.