Table 1.

Learning matrix factors.

	Decision	1 – PCI 2 – CABG
1	Unstable angina	1 – yes, 0 – no
2	Myocardial infarction at admission	1 – yes, 0 – no
3	Stable angina	1 – yes, 0 – no
4	Age	Years
5	Gender	1 – male, 2 – female
6	Diabetes	1 – yes, 0 – no
7	Left ventricle aneurism	1 – yes, 0 – no
8	Akinesis	1 – yes, 0 – no
9	Diskinesis	1 – yes, 0 – no
10	Hypokinesis	1 – yes, 0 – no
11	Thrombus in left ventricle	1 – yes, 0 – no
12	Serum ALT more than 50 ЕD/L	1 – yes, 0 – no
13	Serum direct bilirubin 3.4 μmol/L	1 – yes, 0 – no
14	Serum urea more than 6.4 mmol/L	1 – yes, 0 – no
15	Serum creatinine 102 μmol/L	1 – yes, 0 – no
16	GFR	ml/min
17	Disability	0, 1, 2, 3
18	Living place	0 – capital, 1 – small town, 2 – village
19	Atrial fibrillation	1 – yes, 0 – no
20	Serum glucose max	mmol/L
21	Maximum carotid stenosis	0 – no, 1 – < 50%, 2 – 50–75%, 3 – > 75%
22	Atrial flutter	1 – yes, 0 – no
23	Rest heart rate	1/min
24	Cardiomyopathy	1 – yes, 0 – no
25	Chronic obstructive pulmonary disease	1 – yes, 0 – no
26	Echo: right ventrical pressure	mm Hg
27	Echo: right atrial size	cm
28	Echo: right ventrical size	cm
29	Echo: left ventricle end systolic size	cm
30	Echo: systolic volume	ml
31	Echo: left ventricle ejection fraction	%
32	Aortal regurgitation	−, +, ++, +++, ++++
33	Mitral regurgitation	−, +, ++, +++, ++++
34	Tricuspid regurgitation	−, +, ++, +++, ++++
35	Chronical heart failure, NYHA	0, 1, 2, 3
36	SYNTAX	1
37	Coronary angio: number of cardiocycles contrast evacuation	1
38	Echo: left ventricle end diasystolic volume	ml
39	Echo: left ventricle end systolic volume	ml
40	Muscle bridging	1 – yes, 0 – no

PCI: percutaneous coronary angioplasty, CABG: coronary aortic bypass surgery, ALT: alanine aminotransferase, GFR: glomerular filtration rate, NYHA: New York Heart Association.