Table 3

Clinical characteristics of CABG surgery patients by socioeconomic status (SES), Rome 1996–1997. Level I = highest; level IV = lowest

		SES level
		I				II			III			IV		Total
		Number	%			Number	%		Number	%		Number	%	Number	%
Type of IHD
none	3	0.9		6	1.0		8	1.4	2	0.6	20	1.0
acute/subacute forms	37	11.2		66	10.9		69	11.9	46	12.9	30	11.6
angina pectoris	7	2.1		0	0.0		10	1.7	8	2.2	20	1.3
chronic forms	218	66.1		405	66.6		359	62.1	208	58.5	82	63.6
old myocardial infarction	3	0.9		3	0.5		5	0.9	1	0.3	19	0.6
acute myocardial infarction	8	2.4		15	2.5		18	3.1	4	1.1	21	2.4
mixed	54	16.4		113	18.6		109	18.9	87	24.4	38	19.4
Comorbidities (at least one)	125	37.9		261	42.9		264	45.7	159	44.7	62	43.2
other heart disease	30	9.1		57	9.4		66	11.4	42	11.8	29	10.4
diabete	32	9.7		84	13.8		78	13.5	58	16.3	32	13.5
hypertension	49	14.8		114	18.7		113	19.5	67	18.8	37	18.3
COPD	7	2.1		14	2.3		13	2.3	12	3.4	21	2.5
chronic renal disease	3	0.9		12	2.0		8	1.4	1	0.3	20	1.3
malignant neoplasm	1	0.3		1	0.2		0	0.0	1	0.3	19	0.2
peripheral arterial disease^3-150	22	6.7		43	7.1		50	8.6	17	4.8	26	7.0
Complications (at least one)	17	5.1		33	5.4		39	6.7	23	6.5	25	6.0
local	1	0.3		4	0.7		8	1.4	4	1.1	20	0.9
systemic	16	4.8		31	5.1		33	5.7	21	5.9	24	5.4
Other operations on heart	25	7.6		46	7.6		55	9.5	29	8.1	27	8.3
Operations on arteries	4	1.2		16	2.6		17	2.9	2	0.6	21	2.1