Table 1.

Hospital volume and 30-day mortality statistics for acute myocardial infarction, heart failure, and pneumonia admissions at Veterans Health Administration hospitals for fiscal years 2007-2009.

	Principal Discharge Diagnosis
	Acute Myocardial Infarction	Heart Failure	Pneumonia
No. of Cases	13,046	26,379	31,126
No. of Hospitals	123	124	124
Median Cases per Hospital (range)	87 (2-773)	188 (5-652)	221.5 (23-1172)
Hospital Case Volume, No. (%)
< 50	35 (28.5)	5 (4.0)	1 (0.8)
50-99	36 (29.3)	15 (12.1)	9 (7.3)
100-199	38 (30.9)	46 (37.1)	38 (30.7)
200-299	11 (8.9)	30 (24.2)	38 (30.7)
300-399	1 (0.8)	21 (16.9)	23 (18.5)
≥ 400	2 (1.6)	7 (5.6)	15 (12.1)
Mean 30-Day All-Cause Mortality Rate (95% Confidence Interval)
Observed	14.6% (13.4%-15.8%)	10.3% (9.7%-10.9%)	12.6% (12.0%-13.3%)
Risk-standardized	14.3% (13.9%-14.6%)	10.1% (9.9%-10.4%)	13.0% (12.7%-13.3%)