Condition/Procedure                             Favorable Hospital Volume
                                                Characteristic 
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Coronary artery bypass                          Volume > 500/year 
Coronary angioplasty                            Volume > 400/year 
Abdominal aortic aneurysm repair                Volume > 30/year 
Carotid endarterectomy                          Volume > 50/year 
Esophageal cancer surgery                       Volume > 7/year 
Delivery with expected birthweight              Regional neonatal ICU with
< 1500 grams or gestational age                 average daily census > 15
< 32 weeks
Delivery with pre-natal diagnosis               Regional neonatal ICU with
of major congenital anomalies                   average daily census > 15 
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