Table 3.

Mean and standard deviation of midwives’ knowledge score before and after intervention in both groups

Midwives’ knowledge score	Groups, mean±SD		Test result between the two groups
	Speech with feedback (34 people)	Standardized patient (33 people)
Before intervention	11.6±2.5	12.4±2.3	t=1.4, df=65, P=0.169, independent t-test
After intervention	18.1±1.1	17.2±1.9	Z=7.3, P<0.001, Mann-Whitney
Result of Intergroups test	Z=−5.1, P<0.001, Wilcoxon	t=−20.5, df=32, P<0.001, paired t-test

SD=Standard deviation