Table 2.

Results of the analysis of the Cobb angle in the two groups$\left({\overline{x}\pm s}^{\circ }\right)$ 

Group	Before the treatment	After the treatment	p-value	z value
Observation	13.5(11.0-17.3)	16.0(10.8-20.0)	0.010*	- 2.564
PSSE	15.0(11.0-17.0)	5.0(2.0-12.0)	≤0.001*	- 3.646
p-value			≤0.001○
t value				-3.847

^*Differences within the same group were significant, p < 0.05

^○Difference between the two groups after the treatment was significant, p < 0.05