Group I

Group II

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

Mean

SD

Mean

SD

t’

p’

Base line

2.22^b,c

0.43

2.29^b,c

0.48

−0.795

0.429

4 weeks

1.21^a,c

0.26

0.99^a,c

0.21

4.488

<0.001

12 weeks

1.09^a,c

0.21

0.67^a,c

0.20

10.182

<0.001