All patients

Group I

(n = 20)

Group II

(n = 20)

Group III

(n = 20)

F/χ2#

P value

Mean ± SD

12.97 ± 5.09

11.25 ± 3.97

12.35 ± 4.40

15.30 ± 6.01ab

3.691

0.031*

Range

5 - 30

5 - 18

5 - 25

5 - 30