Table 1 . Descriptive data of three intervention groups and the differences of scores .

Type		Pretest		Posttest
	N	Meana	Sd	Meana	Sd	Significanceb of difference
Face to Face Lecture	30	4.1	1.6	13.5	1.2	0.000
Interactive Internet Based	27	4.4	1.3	14.3	.91	0.000
Computer based	27	4.1	1.9	13.7	1.1	0.000
Significance b of difference		p= 0.774		p= 0.023

^a Means are out of 15.

^bThe mean difference is significant at the 0.05 level.