Table 2.

Effect of the briefing intervention on hands-on resuscitation performance, coordinative performance and defibrillator performance

	Unadjusted results								Adjusted results*							Statistical parameters
	Before intervention				After intervention				After intervention				Difference in performance (intervention – control)			F	df	P value
	Task 1 control		Task 1 briefing		Task 2 control		Task 2 briefing		Task 2 control		Task 2 briefing
	M	SD	M	SD	M	SD	M	SD	M	SE	M	SE	M	Lower 95% CI	Upper 95% CI
Hands-on performance	60.04	16.90	56.36	14.82	68.63	13.68	73.16	8.63	67.82	1.69	74.03	1.75	6.21	1.31	11.10
Experience																32.9 1†	1	<0.001
Intervention																6.09†	1	0.017
Coordination performance	0.64	0.35	0.69	0.31	0.65	0.34	0.83	0.26	0.66	0.04	0.81	0.05	0.15	0.02	0.28
Experience																35.77	1	<0.0.001
Intervention																5.51	1	0.023
Defibrillation performance	65.50%‡		74.10%‡		0.50	0.31	0.47	0.30	0.50	0.06	0.47	0.06	−0.09	−0.27	0.09
Experience																1.04	1	0.312
Intervention																0.19	1	0.663

Note: n=56 teams.

*Adjusted for performance in task 1 (experience).

†Statistics are based on arcsine transformation of performance scores.

‡Experience for defibrillation performance represents whether the team defibrillated or not within task 1.

M, Mean.