Table 2.

Crude Outcomes of Specialty, High Volume, and Lower Volume Hospitals

	Smaller Specialty N = 1058	Larger Specialty N = 1359	High Volume >200 Cases/Yr N = 11,064	Moderate Volume 26–200 Cases/Yr N = 55,588	Low Volume <25 Cases/Yr N = 11,535
Mortality (%)	0.38	0.59	0.62	0.60	0.81
Acute myocardial infarction (%)	0.38	0.81	0.77	0.80	0.84
Pulmonary embolus (%)	0.47	1.2	0.70	0.78	0.88
Hospitalized pneumonia* (%)	0.76	1.0	1.1	1.4	1.7
Deep knee infection† (%)	0.19	0.15	0.24	0.37	0.49
Any of the above* (%)	2.1	3.1	3.0	3.5	4.2

Smaller specialty = ≤100 beds; larger specialty = 101–299 beds.

Test for trend: *P < 0.005; †P < 0.05.