Table 2: Comparison of the effect size between group A and B in pain reduction.

PeriodsEffect sizeEffect size
Group AGroup B

Base line visit0.568740.617133
2nd visit

Base line visit1.233590.993695
3rd visit

Base line visit1.9562871.204716
4th visit

=Dunn-Sidak adjustment, effect size=0.2 small, 0.5 medium, 0.8 large.