Table 3.

Comparing the mean scores of interviewing skills and its three domains in the two groups before and after the intervention

Interviewing skill		Mean (SD)		Z or t	p
		Control	Intervention
Interview beginning	Before	10.07 (1.73)	9.64 (1.86)	-0.87	0.401**
	After	10.36 (1.49)	14.29 (2.70)	-4.75	<0.001*
Interview implementation	Before	17.36 (4.16)	17.86 (5.48)	-0.27	0.788*
	After	17.36 (3.45)	27.71 (3.97)	-4.24	<0.001**
Interview termination	Before	6.21 (1.36)	6.21 (1.57)	-0.19	0.874**
	After	6.21 (1.42)	12.50 (2.95)	-4.20	<0.001**
Total	Before	33.64 (6.02)	33.71 (7.34)	-0.02	0.978*
	After	33.93 (5.39)	54.50 (8.16)	-7.86	<0.001*

*Independent-sample t-test. **Mann-Whitney U