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. Author manuscript; available in PMC: 2017 Nov 1.
Published in final edited form as: Ann Thorac Surg. 2016 Jul 22;102(5):1580–1587. doi: 10.1016/j.athoracsur.2016.04.034

Table 5.

Change in performance categories: benchmark vs. all operations

Benchmark Operations
Performance Category
Lower Than
Expected		 Same as
Expected		 Higher Than
Expected
All Operations Performance Category Lower Than
Expected		 10 5 0
Same as
Expected		 1 66 5
Higher Than
Expected		 0 3 5

Cells depict the number of centers in each category when characterizing performance based on benchmark only vs. all operations. Those that fall along the diagonal (shaded cells) represent centers classified in the same category with either method. Overall, 81/95 (85%) centers did not change performance classification. Fourteen centers (15%) changed by one category; no centers changed by two categories.