Table 1

Ischaemic heart disease (IHD) and coronary artery bypass graft (CABG) surgery annual hospital admission rates × 10 000 (age adjusted) by gender and socioeconomic status (SES), Rome 1996–1997. Level I = highest; level IV = lowest

		SES level
		I			II			III			IV
		Number	Rate		RR	Rate		RR^1-150	95% CI		Rate	RR^1-150	95% CI	Rate	RR^1-150	95% CI
Men
IHD	2788	93.0	1.00	111.2	1.20	1.12, 1.28	121.7	1.31	1.23, 1.40	145.8	1.57	1.46, 1.68
CABG	277	9.7	1.00	9.9	1.03	0.83, 1.27	11.0	1.14	0.92, 1.41	10.3	1.07	0.84, 1.35
CABG per 100 IHD		14.1^1-151	1.00	10.3^1-151	0.73	0.52, 1.03	12.7^1-151	0.90	0.64, 1.26	8.9^1-151	0.63	0.44, 0.89
Women
IHD	1610	34.1	1.00	45.1	1.32	1.22, 1.44	53.4	1.57	1.44, 1.70	66.2	1.94	1.78, 2.12
CABG	53	1.1	1.00	1.6	1.44	0.88, 2.36	1.4	1.30	0.78, 2.17	2.3	2.05	1.22, 3.45
CABG per 100 IHD		4.3^1-151	1.00	8.8^1-151	2.08	0.78, 5.55	3.9^1-151	0.92	0.35, 2.41	4.9^1-151	1.15	0.45, 2.97

↵1-150 RR = rate ratios comparing occurrence of IHD and CABG hospital admissions in each SES level taking level I as the reference group.
↵1-151 Age standardised rate of CABG per 100 IHD hospital admissions.