Long-term effects of percutaneous coronary intervention versus coronary artery surgery in elderly with multi-vessel coronary artery disease

The Egyptian Heart Journal

Table 3 Two studied groups compared in accordance with clinical presentation

Clinical presentation	Group 1 (n = 50)		Group 2 (n = 50)		χ²	p
	No.	%	No.	%
Exertional dyspnea	12	24.0	12	24.0
Angina	27	54.0	28	56.0	0.066	0.968
MI	11	22.0	10	20.0

χ² Chi-square test, p p-value for comparison between the two studied groups, Group 1 patient treated with PCI and drug-eluting stents, Group 2 patient treated with CABG