Table - 4. Publication Bias Assessment.

Comparisons	*Begg	*Egger
Between two groups before the treatment	0.313	0.901
Between two groups after the treatment
2 weeks	0.317	0.483
4 weeks	0.652	0.996
8 weeks	0.602	0.673
Before and after treatment in the intervention group
2 weeks	0.497	0.556
4 weeks	0.543	0.836
8 weeks	0.174	0.774

* P-value was calculated at 95