The effect of peer-group size on the delivery of feedback in basic life support refresher training: a cluster randomized controlled trial

Table 1 Baseline characteristics of study participants (N = 115)

Variables	Standard group (n = 58)	Large group (n = 57)	p-value
Sex, female	21 (36.2 %)	21 (36.8 %)	1.000
Age, years	27.8 (26.8–28.8)	27.4 (26.6–28.2)	0.333
Number of one-rescuer adult BLS practices using
CPR manikin in a previous BLS training at the start of clinical rotation	3.4 (2.7–4.1)	4.8 (3.2–6.4)	0.049
Number of real CPR experiences during students’ clinical rotation before EM clerkship	0.4 (0.2–0.6)	1.0 (0.7–1.3)	0.001*
Number of students in training group	4.1 (3.9–4.3)	8.1 (7.7–8.5)	<0.001*

Standard group, Standard group of 3–5 students with one instructor; Large group, Large group of 7–10 students with one instructor
Data are presented as number (%) or mean (95 % confidential interval)
Abbreviations: BLS basic life support, CPR Cardiopulmonary resuscitation
*p < 0.05 based on Student’s t-test between standard and large groups

ISSN: 1472-6920