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Table 4 Risk factor combinations and mortality

From: Open necrosectomy in acute pancreatitis–obsolete or still useful?

 Age > 60 yearsCo-morbidity*IndicationNecrosectomy < 28 daysMultiple organ failureWBC count ≥ 23.0§No risk factors||
Age > 60 years41.9%, 31      
Co-morbidity*50.0%, 1832.6%, 43     
Indication85.7%, 750.0%, 666.7%, 18    
Necrosectomy < 28 days61.5%, 1360.0%, 1588.9%, 942.5%, 40   
Multiple organ failure83.3%, 675.0%, 884.6%, 1352.4%, 2148.5%, 33  
WBC count ≥ 23.0§100.0%, 680.0%, 1088.9%, 976.9%, 1368.8%, 1662.5%, 24 
No risk factors||0.0%, 60.0%, 110.0%, 20.0%, 50.0%, 20.0%, 20.0%, 24
  1. Bolded values represent mortality percentage at 90-day follow up after first necrosectomy in patients with the specific risk factor combination in question. Non-bolded values are the absolute number of patients with the specific risk combination in question
  2. WBC white blood cell
  3. *Any of the gathered co-morbidities in univariate analysis (Additional file 2)
  4. Indication of necrosectomy: deterioration/prolonged organ failure
  5. From symptom onset
  6. §WBC count expressed as 1 × 109/L. Within 24 h of first necrosectomy. One WBC count was not taken 24 h prior to operation, and thus, the last available WBC count prior to first necrosectomy was used
  7. ||None of the risk factors presented in multivariate analysis (Table 3)