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

The Egyptian Heart Journal

Table 4 Two studied groups compared in accordance with coronary angiography data

Coronary angiography	Group 1 (n = 50)		Group 2 (n = 50)		χ²	p
	No.	%	No.	%
Presence of left main disease
Absent	46	92.0	25	50.0	21.418*	< 0.001*
Present	4	8.0	25	50.0
Number of diseased vessels
LAD (and diagonal) lesion
Free	4	8.0	3	6.0	0.154	^FEp = 1.000
Yes	46	92.0	47	94.0
LCX (and OM) lesion
Free	12	24.0	8	16.0	1.000	0.317
Yes	38	76.0	42	84.0
RCA (PDA and PL) lesion
Free	15	30.0	7	14.0	3.730	0.053
Yes	35	70.0	43	86.0
RAMUS lesion
Free	48	96.0	45	90.0	1.382	^FEp = 0.436

Number of lesions	No.	%	No.	%	Test of sig.	p
2	11	22.0	2	4.0	χ² = 26.956	^MCp < 0.001*
3	24	48.0	13	26.0
4	12	24.0	11	22.0
5	1	2.0	12	24.0
6	2	4.0	5	10.0
7	0	0.0	4	8.0
8	0	0.0	2	4.0
9	0	0.0	1	2.0
Min.–Max	2.0–6.0	2.0–9.0			U = 574.0*	< 0.001*
Mean ± SD	3.18 ± 0.94	4.60 ± 1.62
Median (IQR)	3.0 (3.0–4.0)	4.0 (3.0–5.0)
Syntax score I
< 22	37	74.0	24	48.0	χ² = 8.138*	^MCp = 0.017*
22–32	12	24.0	20	40.0
> 32	1	2.0	6	12.0
Min.–Max	10.0–35.50	11.0–67.0	U = 825.0*	0.003*
Mean ± SD	19.06 ± 5.66	23.72 ± 9.11
Median (IQR)	18.25 (14.0–22.0)	22.0 (18.0–28.0)
Syntax score II
PCI	2	4.0	2	4.0	χ² = 1.678	^MCp = 0.437
PCI or CABG	26	52.0	32	64.0
CABG	22	44.0	16	32.0
Min.–Max	21.30–56.0	18.10–45.70			U = 1166.0	0.562
Mean ± SD	32.06 ± 7.82	30.67 ± 5.42
Median (IQR)	31.05 (26.0–36.50)	30.10 (27.40–32.70)
Euro score II
Min.–Max	–	0.64–3.35
Mean ± SD	–	1.71 ± 0.61	–	–
Median (IQR)	–	1.61 (1.23–2.17)

χ² Chi-square test, FE Fisher exact, MC Monte Carlo, U Mann Whitney 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
*Statistically significant at p ≤ 0.05