Table 4.

Unpaired samples test

	Number of observations	Mean	Std. deviation	Std. error of the mean	95% CI	t	Degrees of freedom
Pre-test	26	10.08	2.33	0.46	9.13–11.02
Post-test	28	13.14	1.41	0.27	12.60–13.69
Difference		3.07		0.52	2.02–4.11	5.90	52