Table 6.

Comparison of changes in cobb angle before surgery, 6 months after surgery, and at the last follow-up between the two groups ( $\overline{x}\pm s$ ).

Measurement period	Group A (n = 75)	Group B (n = 59)	T	p
Preoperative (°)	5.17 ± 20.06	3.49 ± 18.11	0.50	0.61
6 months after surgery (°)	10.86 ± 21.75	8.51 ± 18.46	0.66	0.50
Last follow-up (°)	10.19 ± 22.65	7.30 ± 21.78	0.74	0.45
Correction (°)	5.69 ± 10.12	5.02 ± 10.72	0.37	0.71
Lose (°)	−0.66 ± 3.40	−1.21 ± 8.59	0.49	0.62