Table 4.

U.S. elderly AMI patients, 1984–1990: Trends for differential distance groups

Variable	Year of AMI
	1984				1990
	Adopted catheterization before 1984		High volume		Adopted catheterization before 1984		High volume
	Near	Far	Near	Far	Near	Far	Near	Far
Patient share	43.4	56.6	50.2	49.8	43.2	56.8	50.0	50.0
Age (SD)	75.7  (7.1)	75.6  (7.0)	75.6  (7.0)	75.6  (7.0)	76.2  (7.4)	76.1  (7.3)	76.2  (7.3)	76.1  (7.3)
Female	50.0	47.8	49.7	47.8	50.8	49.1	50.9	48.8
Black	7.2	3.9	5.9	4.8	7.8	4.2	6.4	5.1
Rural	4.9	48.5	7.7	51.7	5.2	48.3	8.6	51.7
Cancer	1.2	1.1	1.1	1.1	1.6	1.5	1.6	1.5
Pulmonary disease	8.1	8.4	7.7	8.8	12.2	13.2	12.4	13.2
Dementia	0.7	0.7	0.6	0.7	1.1	1.2	1.1	1.2
Diabetes	14.1	13.8	13.5	14.3	18.6	19.0	18.9	18.8
Renal disease	3.6	3.1	3.2	3.4	6.6	5.8	6.4	5.8
Cerebrovascular disease	2.1	2.1	2.0	2.2	2.9	2.6	2.8	2.7
Initial admit to hospital	70.2	12.4	51.9	22.9	73.3	16.9	52.7	28.7
with catheterization by 1984
Initial admit to hospital	11.6	23.0	21.2	15.0	12.7	25.3	23.2	16.7
adopting catheterization, 1984–1990
Initial admit to	61.3	32.3	75.0	14.5	63.9	37.6	78.1	19.3
high-volume hospital
90-day catheterization rate	11.2	7.9	9.1	9.6	37.5	31.3	34.5	33.3
90-day PTCA rate	1.3	0.8	1.0	1.1	11.8	9.6	10.5	10.5
90-day CABG rate	5.5	4.2	4.9	4.6	12.3	11.2	11.8	11.6
1-day mortality rate	8.3	9.3	8.1	9.7	6.7	7.6	6.4	8.0
1-year mortality rate	39.8	40.2	39.4	40.6	35.5	35.7	35.1	36.0
2-year mortality rate	47.1	47.4	46.9	47.7	42.3	42.7	42.2	42.9
1-year total hospital costs	$14,392	$11,338	$13,897	$11,830	$18,076	$15,566	$17,735	$15,858
(1991 dollars)