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Table 4 Amount of blood loss for thoracic surgery patients at all institutions the year before and after standardization

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

  Before After p-value
All cases (g) before: n=373, after: n=372    
 Median (25, 75%) 10 (3, 56) 5 (3, 12) <0.0001
Lobectomy (g) before: n=74, after: n=83    
 Median (25, 75%) 39 (10, 80) 10 (5, 30) 0.0002
Partial resection (g) before: n=183, after: n=205    
 Median (25, 75%) 5 (3, 10) 3 (3, 5) 0.04