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Table 6 The sources for the pre-defined adverse occurrences coded by all four reviewers independently after the initial training sessions.

From: Towards standardized measurement of adverse events in spine surgery: conceptual model and pilot evaluation

Categories Number  
Surgical List   56
   Iatrogenic injury 25  
   Device problems 16  
   Diagnosis problems 4  
   Wound problems 11  
Medical List   70
   Respiratory events 18  
   Hematological events 17  
   Urological events 12  
   Neurological events 8  
   Cardiac events 7  
   Drug-related events 4  
   Gastrointestinal events 2  
   Vision problems 2  
Anesthetic List   10
   Escalation of care 7  
   Airway problems 3  
Management List   5
   Delay in surgery 3  
   Process of care issues 2  
Total   141