Table 2. Errors observed during snapshot audits.

Numbers in brackets are percentages of all observer remarks in that year.

Observed errors in using the SSC	2015 (N = 54)	2016 (N = 25)
Sign-in
Site was not marked		1
Equipment was checked but checklist item was not ticked off	1
Equipment was not tested		3
SI was performed but not documented	4	4
SI-error rate	5 (9.3%)	8 (32.0%)
Team-time-out
TTO was performed but checklist items were not ticked off		1
TTO was done too early (not all team members were in the OR)	16	6
Team members did not focus on TTO	2	1
Checklist items of the SI were partially ticked off during TTO		1
TTO was not stopped despite mentioned operative site mismatch	1
Checklist items of TTO already ticked off during SI	1
Team did not check all checklist items	8	1
No answer from the team but checklist items were ticked off	2
SSC coordinator asked and answered the checklist item	2
TTO-error rate	32 (59.3%)	10 (40.0%)
Sign-out
SO was performed during skin closure	4	1
SO was performed after skin closure	4	5
Team did not check all checklist items	4
A team member leaves the OR before the SO	4
No SO	1	1
SO-error rate	17 (31.5%)	7 (28.0%)