Table 2.

Annual Rates of Change of Per-Enrollee Utilization of Selected Surgical Procedures (Percent)

Procedure	1996–2001	2001–06	2006–10
All surgery	1.3	0.0	−3.4
Abdominal aortic aneurysm repair	1.9	−2.1	−3.4
Back surgery	6.5	2.5	1.8
Coronary angiography	3.8	−1.8	−7.2
Coronary artery bypass grafting (CABG)	−1.6	−6.6	−7.4
Percutaneous coronary interventions	8.0	2.4	−10.9
Carotid endarterectomy	−1.1	−5.6	−6.1
Cholecystectomy	−0.6	−3.6	−4.2
Hospitalization for hip fracture	−0.9	−1.6	−2.4
Hip replacement	3.7	2.4	4.0
Knee replacement	2.6	7.3	1.6
Mastectomy for breast cancer	−2.7	−8.7	−6.2
Resection for colon cancer	−0.3	−3.9	−16.2
Aortic/mitral valve replacement	2.7	0.1	0.2

Source: Dartmouth Atlas of Health Care.