Table 1.

Characteristics of student groups

Variable	Total (n = 156)		Spaced group (n = 54)		Massed group (n = 102)		Statistical differenceb
	n	%	n	%	n	%	p
Drop-out ratea	35	18.3	10	15.6	25	19.7	0.603
Gender (female)	94	60.3	33	61.1	61	59.8	0.874
Age below 25 years	77	49.4	19	35.2	58	56.9	0.010
Native language German	128	82.1	40	74.1	88	86.3	0.059
Work experience in EMS	13	8.3	5	9.3	8	7.8	0.761

^atotal of eligible students: n = 191

^bChi-square test