Protocol

Nothing

Low

Moderate

Total

p

Pr1

0

0.00%

21

56.76%

16

43.24%

37

<0.0001

Pr2

4

9.52%

30

71.43%

8

19.05%

42

Pr3

3

6.67%

26

57.78%

16

35.56%

45

Pr4

10

24.39%

31

75.61%

0

0.00%

41