. Author manuscript; available in PMC: 2020 Aug 1.

Published in final edited form as: J Trauma Acute Care Surg. 2019 Aug;87(2):289–296. doi: 10.1097/TA.0000000000002367

Table I:

Procedure Specific Standard Deviation from Mean Mortality Stratified by Cluster

Operation	Average Performing Hospitals	Low Performing Hospitals	High Performing Hospitals
Appendectomy	−0.062	1.179	−0.889
Cholecystectomy	0.045	1.114	−0.996
Colectomy	−0.113	1.098	−0.746
Inguinal Hernia Repair	0.128	0.981	−1.009
Adhesiolysis	−0.046	1.153	−0.891
Repair of Perforated Viscus	−0.087	0.889	−0.610
Small Bowel Resection	−0.202	0.990	−0.523
Ventral Hernia Repair	0.197	0.962	−1.098
Within Class Variance	5.801	3.694	2.811