Action

Terrible/Bad

Regular

Good

Excellent

Test^*

P

N

%

N

%

N

%

N

%

1. Follows the protocol

Control

9

20

17

37.8

15

33.3

4

8.9

25.15

0.0001

Experimental

-

-

2

4.4

30

66.7

13

28.9

2. Reports the reason of silence

Control

45

100

-

-

-

-

-

-

-

0.0001

Experimental

-

-

3

6.73

17

37.8

25

55.6

3. Avoids silence

Control

41

91.1

1

2.2

1

2.2

2

4.4

-

0.0001

Experimental

-

-

-

-

16

35.6

29

64.4