Table 4.

Comparison of knowledge according to level of qualification

	Level of qualification	n	Mean	Std. Deviation	Mean diff	T	P
Know about substance usage	BDS	74	0.80	0.405	-0.14	-3.339	0.000*
	MDS	140	0.94	0.233
Know about DAST test	BDS	74	0.47	0.503	-0.04	-0.573	0.5**
	MDS	140	0.51	0.502
Know about CAGE test	BDS	74	0.38	0.488	-0.17	-2.410	0.01*
	MDS	140	0.55	0.499
Know about AUDIT test	BDS	74	0.38	0.488	-0.17	-2.410	0.01*
	MDS	140	0.55	0.499
Know about ASSIST test	BDS	74	0.57	0.499	0.03	0.443	0.3**
	MDS	140	0.54	0.501

*significant. ** non-significant