Table 1

Bayes table to determine the influence of clinical variables on the incidence of major adverse complicating events (MACE) in patients undergoing percutaneous transluminal coronary angioplasty in 1500 consecutive procedures (development group)

Risk factor	MACE	No MACE	Count	Contribution (%)
AHA, A	0.205	0.314	456	−0.548
AHA, B	0.477	0.489	713	−0.036
AHA, C	0.250	0.178	261	0.630
Age 0–35 years	0.00	0.007	11	−1.59
Age 36–50 years	0.091	0.161	233	−0.680
Age 51–65 years	0.341	0.467	680	−0.425
Age 66–75 years	0.341	0.287	420	0.295
Age 76–100years	0.227	0.078	117	2.90
Diabetic	0.136	0.098	244	0.59
Non–diabetic	0.568	0.760	1204	−0.36
Male	0.613	0.696	1013	−0.185
Female	0.318	0.256	375	0.376
Hypertension	0.318	0.314	458	0.022
No hypertension	0.386	0.544	791	−0.455
Stable angina	0.227	0.448	648	−0.775
Unstable angina/PAMI	0.432	0.485	705	−0.17
Shock	0.0682	0.002	9	35.9
LV good	0.295	0.739	1067	−0.95
LV fair	0.318	0.159	236	1.53
LV poor	0.136	0.026	41	6.21
Lysis < 24 hours	0.205	0.070	107	2.89
Single vessel	0.75	0.838	1220	−0.164
Multiple vessels	0.25	0.162	239	0.85
Previous CABG	0.0455	0.109	158	−0.918
No previous CABG	0.909	0.876	1278	0.059
Renal failure	0.023	0.006	9	3.97

AHA, American Heart Association classification of lesion morphology; CABG, coronary artery bypass grafting; LV, left ventricular function; PAMI, primary angioplasty in myocardial infarction.