Table 3.

Paired samples t-test

	Paired differences (Posttest - Pretest)
				95% confidence interval of the difference
Domains	Mean	Std. deviation	Std. error mean	Lower	Upper	t	Degree of freedom	p value
Nosocomial infections	1.369	1.794	.066	1.238	1.500	20.589	727	≤.005
Standard precautions	.550	3.242	.120	.314	.786	4.584	727	≤.005
Hand hygiene	2.663	3.680	.136	2.395	2.931	19.527	727	≤.005
Total	4.586	5.583	.206	4.180	4.992	22.162	727	≤.005