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

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