2.

Coronary angiography and echocardiography findings.

Variable	Total	PCI group	OMT group	P-value
Data are presented as means ± SD or %. LAD: left anterior descending coronary artery; LCX: left circumflex coronary artery; LM: left main coronary artery; LVEF: left ventricular ejection fraction; OMT: optimized medical treatment; PCI: percutaneous coronary intervention; RCA: right coronary artery.
Coronary angiography
Femoral artery access	31.2%	35.5%	19.3%	0.006
One-vessel disease	26.2%	29.2%	18.8%	0.047
Three-vessel disease	37.6%	33.2%	48.8%	0.015
LM stenosis ≥ 50%	14.7%	10.7%	25.0%	0.002
LAD stenosis ≥ 50%	80.4%	78.8%	84.9%	0.224
LCX stenosis ≥ 50%	66.2%	62.4%	76.2%	0.023
RCA stenosis ≥ 50%	65.6%	64.9%	67.5%	0.670
Echocardiography
LVEF	51% ± 11%	52% ± 11%	49% ± 12%	0.171