Table 4.

Descriptive statistics for final knowledge items

Groups	Mean	N	Std. Deviation	Minimum	Maximum	Range
1	13.49	88	2.501	4	17	13
2	13.52	116	2.455	3	17	14
3	14.03	144	1.918	8	17	9
Total	13.72	348	2.269	3	17	14