Table I Paired-sample t -test of...

Table I

Paired-sample t-test of pre-test and post-test score results of each sex education lesson

School	N	Lesson plan	Mean diff.	SD	t	p-value
A	41	1	0.24	0.97	1.61	0.115
		2	1.37	1.59	5.49	0.000^*
		3	0.66	1.20	3.53	0.001^*
B	35	1	0.87	1.06	4.59	0.000^*
		2	1.36	1.70	4.43	0.000^*
		3	3.61	2.20	9.14	0.000^*
C	26	1	0.96	1.31	3.74	0.001^*
		2	1.42	1.47	4.92	0.000^*
		3	0.96	1.97	2.49	0.020^**

School	N	Lesson plan	Mean diff.	SD	t	p-value
A	41	1	0.24	0.97	1.61	0.115
		2	1.37	1.59	5.49	0.000^*
		3	0.66	1.20	3.53	0.001^*
B	35	1	0.87	1.06	4.59	0.000^*
		2	1.36	1.70	4.43	0.000^*
		3	3.61	2.20	9.14	0.000^*
C	26	1	0.96	1.31	3.74	0.001^*
		2	1.42	1.47	4.92	0.000^*
		3	0.96	1.97	2.49	0.020^**

Notes: ^* Significant level α < 0.001;

^** Significant level α < 0.05