Table 3.

Distribution of the knowledge score, stratified by education

	TOTAL			University-entrance diplomaa		High school degreeb		Secondary school degreec
	n	Median	(Q1, Q3)	Median	(Q1, Q3)	Median	(Q1, Q3)	Median	(Q1, Q3)
T0	48	6.0	(3.0, 9.0)	8.0	(6.0, 10.0)	7.0	(4.0, 8.5)	2.0	(− 1.0, 4.0)
T1	48	10.0	(7.0, 11.0)***	10.0	(9.0, 11.0)**	10.5	(8.5, 12.0)**	6.0	(3.0, 8.0)***
T2	44	8.0	(6.0, 10.5)***	10.0	(8.0, 11.0)	9.0	(7.0, 10.0)*	5.0	(3.0, 6.5)**

Difference to T0, Wilcoxon sign rank test: *p < .05, **p < .01, ***p < .001 (separately for each education level)

^aGerman “(Fach-)Abitur”

^bGerman “Mittlere Reife”

^cGerman “Hauptschulabschluss”