Type

Pain

Group A

Group B

Group C

Effective

n = 6

Percentage

100%

Effective

n = 11

Percentage

100%

Effective

n = 13

Percentage

100%

I

6

100.0%

9

81.8%

13

100.0%

II

0

0.0%

2

18.1%

0

0

III

0

0.0%

0

0.0%

0

0

IV

0

0.0%

0

0.0%

0

0

V

0

0

0

0.0%

0

0