Table 3.

Intra-Cluster-Correlations (ICC) for continuous outcomes

Outcome	ICC of the classes	ICC of the students
SE helping in general (% of total variance)	3.38	20.98
SE helping in cardiac arrest (% of total variance)	0.64	17.03
SE diminished emotional arousal (% of total variance)	2.09	15.82
Number of passed items in BLS (% of total variance)	6.38	7.33