Variable

Categories

Number of patches

Mean ± SD

Z

p value

Patch size (cm2)

Before needling

41

13.78 ± 17.57

−2.226

<0.001**

2 weeks after needling

41

13.61 ± 17.48

Patch size (cm2)

Before needling

41

13.78 ± 17.57

−4.034

<0.001**

2 months after needling

41

12.20 ± 15.68

Patch size (cm2)

Before needling

41

13.78 ± 17.57

−4.03

<0.001**

4 months after needling

41

12.01±15.55