Knudson 2008.

Methods	Randomised trial
Participants	Who: Midlevel surgical trainees who would be leading trauma team resuscitations during the upcoming residency year Number: 10 Proportion of eligible staff participating: Not reported
Interventions	Intervention description: Training in managing trauma consisting of a 5‐part trauma curriculum in scenario‐based, simulator‐enhanced teaching sessions Control: 5‐part trauma curriculum in scenario‐based didactic session Location: Unclear Delivered by: Trauma surgeons Length: 10 hours over 5 weeks Duration: Single intervention
Outcomes	Outcomes: Initial treatment skills (all areas and critical areas); crisis management skills: teamwork, decision making, situation awareness; overall rating of skills Follow‐up: Continued until at least 4 major resuscitations were observed
Population studied	Description: The behaviours of course participants were observed in the emergency department of San Francisco General Hospital during 4 major resuscitations. Number: 40 videotaped resuscitations
Funding Source	US Army medical research and medical command
Study Setting	Emergency department, San Francisco General Hospital
Notes
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Unclear risk	Not reported
Allocation concealment (selection bias)	Unclear risk	Not reported
Blinding of participants and personnel (performance bias) All outcomes	High risk	Not possible
Blinding of outcome assessment (detection bias) All outcomes	Low risk	Blinded to method of how resident was trained
Incomplete outcome data (attrition bias) All outcomes	Unclear risk	Not discussed
Selective reporting (reporting bias)	Unclear risk	Not clear in methods and no published protocol
Other bias	High risk	Reporting on only 10 participants; the study was still in progress at the time of the report