Group I

Group II

Statistical Significance (Group I vs. Group II) (Independent samples “t”-test)

Mean

SD

Mean

SD

t’

p’

Base line

4.06^b,c

0.71

3.83^b,c

0.72

1.611

0.110

4 weeks

3.54^a,c

0.56

3.02^a,c

0.50

4.880

<0.001

12 weeks

3.39^a,c

0.46

2.34^a,c

0.43

11.864

<0.001