Table 2.

Change in scores for verbal feedback and video feedback from session one to session two

Variable	Mean change in score		Cohort B more effective than cohort A		Improvement in cohort B scores between sessions
	Cohort A	Cohort B	p value	95 % CIa	p value	95 % CIa
Total scoreb	4	12	.006	2.8, 15.8	< .001	6.3, 15.8
Global scorec	1.8	2.5	< .001	1.8, 6.0	< .001	3.3, 7.2
Auscultationd	0.8	2.0	.087	−0.2, 3.6	.384	−0.7, 1.9
Compression depthd	0.8	0.3	.312	−1.1, 3.3	§	§
iVentilation qualityd	−1.0	0.3	.002	1.2, 5.0	.124	−0.3, 2.3
Drug administration timingd	0.6	1.8	.059	−0.7, 4.1	.004	0.7, 4.1

^aCI = Confidence intervals; ^bMaximum score = 90; ^cMaximum score = 10; ^dMaximum score = 4

§ Analysis not possible due to the ordinal model on compression depth failing to provide reliable estimates - no student pre-feedback attains a score of 2 and no student post-feedback attains a score of 0, creating issues with the modelling process