Table 2.

Summary of studies assessing the measurement properties of non-technical skills for anaesthesiologists (n=14). *One study included both simulated and clinical settings. Nb. Full study details available in Appendix 4

Characteristic		n studies	Tool(s) studied
Country	Canada	3	•ANTS
	Denmark	2	•ANTS
	New Zealand	2	•Structured coding framework •Structured rating form
	Thailand	1	•ANTS •Ottawa GRS
	UK	2	•ANTS •Workplace-based assessment tool
	USA	4	•ANTS •Unnamed tool •BARS tool
Setting*	Clinical	3	•ANTS •Structured coding framework •Workplace-based assessment tool
	Simulation	12	•ANTS •BARS tool •Structured coding framework •Structured rating form •Unnamed tool40
Team	Staff only	4	•ANTS •Ottawa GRS •Structured coding framework
	Trainees only	9	•ANTS •BARS tool •Structured rating form •Unnamed tool40 •Workplace-based assessment tool
	Staff and trainees	1	•ANTS
Clinical scenario	Anaesthesia emergency in unnamed context (e.g. difficult airway management)	4	•ANTS •BARS tool •Structured rating form
	Obstetrics	2	•ANTS •Ottawa GRS
	Intraoperative period (various or unnamed types of surgeries)	7	•ANTS •Structured coding framework •Unnamed tool40 •Workplace-based assessment tool
	Not reported	1	•ANTS