Table 5 Cobb angle, angle correction and angle lost

Preoperative Cobb angle (°)

19.6 ± 1.6

Cobb angle before discharge (°)

6.2 ± 1.5

Angle correction (°)

13.4 ± 0.6°

Correction rate (%)

68.7 ± 5.4

Cobb angle at final follow-up (°)

9.4 ± 1.0°

Angle lost (°)

3.2 ± 0.7°

Lost rate (%)

24.1 ± 4.8

t/p

57.825/<0.001^a

50.278/<0.001^b