Table 3.

Mean ± standard deviation, intra-group and inter-group comparison for the knowledge test (maximum score=70)

Group	Participants	Initial test	Final test	Statistics and p
Experimental	59	37.10±7.74	47.53±9.36	W = 1603 p<0.0001
Comparison	65	38.38±7.82	40.06±10.09	W = 1231.5 p = 0.074
Statistics and p		t = -0.92 p = 0.361	U = 1040.5 p<0.0001