Table 3 Within group comparison of the average score of patient safety management before, immediately after and also 2 months

Intervention 1

15.60 ± 1.924

25.17 ± 3.32

21.60 ± 3.29

64.889*

< 0.001

Intervention 2

–

24.40 ± 3.67

23.38 ± 3.89

1.059

0.303

Control 1

16.65 ± 2.10

20.80 ± 4.16

16.10 ± 3.55

11.120*

< 0.001

Control 2

–

21.27 ± 3.86

17.05 ± 3.33

4.880

< 0.001

Total intervention

–

24.81 ± 3.47

22.33 ± 3.60

3.164

0.003

Total control

–

21.03 ± 3.98

16.55 ± 3.44

6.001

< 0.001