Time

Mean ± SD

P-value

Prior-treatment

3.02 ± 0.30

Post-treatment

1 wk

3.13 ± 0.31

0.075

2 wk

3.05 ± 0.31

0.135

1 mo

3.06 ± 0.30

0.100

2 mo

3.04 ± 0.33

0.483

3 mo

3.07 ± 0.31

0.086