Grade

Day 1

Day 7

Day 14

Group A (n = 25)

0

15 (60%)

20 (80%)

22 (88%)

I

4 (16%)

1 (4%)

3 (12%)

II

4 (16%)

3 (12%)

0 (0%)

III

2 (8%)

1 (4%)

0 (0%)

IV

0 (0%)

0 (0%)

0 (0%)

Group B (n = 25)

0

13 (52%)

16 (64%)

21 (84%)

I

2 (8%)

3 (12%)

3 (12%)

II

7 (28%)

4 (16%)

1 (4%)

III

2 (8%)

2 (8%)

0 (0%)

IV

1 (4%)

0 (0%)

0 (0%)

Group C (n = 25)

0

9 (36%)

12 (48%)

20 (80%)

I

2 (8%)

5 (20%)

3 (12%)

II

2 (8%)

5 (20%)

1 (4%)

III

8 (32%)

2 (8%)

1 (4%)

IV

4 (16%)

1 (4%)

0 (0%)