Protocol

Nothing

Low

Moderate

Total

Pr1

19

51.35%

17

45.95%

1

2.70%

37

<0.0001

Pr2

29

69.05%

11

26.19%

2

4.76%

42

Pr3

23

51.11%

19

42.22%

3

6.67%

45

Pr4

29

70.73%

12

29.27%

0

0.00%

41