Table 2.

Number of answers changed from incorrect to correct and mean levels of certainty in pre-and post-tests of study modules

Change in certainty answers changed from incorrect to correct in pre- and post tests
Module	Test	No	Certainty mean	SD	t	p-value
1	pre	93	2.07	0.71	−9.29	<0.001
	post	93	3.04	0.79
2	pre	75	1.97	0.54	−7.78	<0.001
	post	75	2.87	0.74
3	pre	71	1.8	0.71	−9.64	<0.001
	post	71	2.93	0.72
4	pre	76	1.87	0.66	−10.8	<0.001
	post	76	3.07	0.77
5	pre	48	1.96	0.54	−6.54	<0.001
	post	48	2.79	0.68