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. Author manuscript; available in PMC: 2019 Jun 11.
Published in final edited form as: Ann Thorac Surg. 2018 Sep 15;107(2):590–596. doi: 10.1016/j.athoracsur.2018.07.036

Table 3.

Composite Measure Reliability Across Reporting Time Frames and Case Volumes

Reporting Time Frame 4 Years 3 Years 2 Years 1 Year
 Composite reliability 0.73 0.67 0.58 0.41
Hospital Case Volume (4-Year Window) 50 Cases 120 Cases 200 Cases 300 Cases
 Number of hospitals in current samplea meeting the specified case volume threshold 100 92 86 75
 Composite reliability 0.30 0.50 0.63 0.71
a

N = 100 total.