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Table 2 Pre-and post-operative times for 10 consecutive patients at each hospital (total: 50 patients) before and after standardization of operating room procedures

From: Improvements in thoracic surgery outcomes: a multi-institutional collaboration study

  Before n=50 After n=50 p-value
Pre-operative time (min)    
 Median (25%, 75%) 59 (52, 70) 53 (48, 61) 0.008
Post-operative time (min)    
 Median (25%, 75%) 52 (40, 70) 38 (29, 43) <0.0001