Table 3

SSC item completion

	Hospital 1			Hospital 2
	Completion	NA	Outside	Completion	NA	Outside
Sign In item completion (%)
Patient's identity stated and agreed	100			100		29
The patient's wristband is checked	100			81		28
The patient's procedure stated and agreed	99			94		28
Patient's consent stated and verified	99			84		33
Communication with patient	65		3	100		31
Presence or absence of allergy stated	93			94		32
Anaesthetist responds	19			24		33
Surgeon responds	0	89		3	81	3
Complex airway query	47		2	6
Anaesthetist responds	89			100
Blood availability statement	82			50		9
Anaesthetist responds	24			100		11
Patient's surgical site stated and agreed	97			–	–	–
The surgical site marking is checked if applicable*	47	17
The surgical site and side marking is checked if applicable	–	–	–	63		28
Time Out item completion (%)
Team introduction
Name and role	3			16
Name only	33			6
Acknowledgment that team is known†	31			18
None	34			59
Patient's identity stated and agreed	100			96		48
Patient's procedure stated and agreed	100		1	98		48
Patient's surgical site stated and agreed	83	17	1	–	–	–
Presence of correct imaging confirmed	15	67		2	70	4
Confirmation of antibiotic requirements	96			86		41
Confirmation of thrombo-prophylaxis requirements	90			50		24
Anticipated critical events are reviewed	94			32		17
Anaesthetist enumerates/denies anticipated critical events	83			63		61
Surgeon enumerates/denies anticipated critical events	87			69		33
Nurse enumerates/denies anticipated critical events	35			0		17
Sign Out item completion (%)
Procedure name is recorded	95		3	89		4
Correct count is verified	91		13	89		29
Confirmation that specimen is correctly labelled	41	55	7	33	56	11
Key concerns for handover are discussed	100		3	44		1
Anaesthetist responds	91		67	75		0
Surgeon responds	91			50		100
Nurse responds	9			0		0

Item completion is the percentage of domain-compliant cases in which each individual item was administered, ‘NA’ is the percentage of cases in which the SSC domain was administered but the item was not applicable, ‘Outside’ is the percentage of the total cases in which the item was missed (either because the entire domain or the item itself was omitted) but was discussed outside the context of correct administration of the SSC. See text for further explanation of data.
*Surgical site is stated and agreed, and surgical site marking items are combined as one item for the Hospital 2 adaptation; these are retained as separate items on the Hospital 1 adaptation.
†Note that the Hospital 1 adaptation requires confirmation that the team is known, whereas this is not mandated for each case at Hospital 2 (see online supplementary appendices 1–3).
SSC, Surgical Safety Checklist.