Deformity characteristics.
| Variables | Normal (n = 91) | Prolonged (n = 38) | P Value |
| Major curve degree | 0.762 | ||
| Mean ± SD | 60.9 ± 11.6 | 60.0 ± 9.8 | |
| Median (IQR) | 58.0 (52.5–64.0) | 57.5 (53.0–63.0) | |
| Minor curve degree | 0.302 | ||
| Mean ± SD | 43.6 ± 13.9 | 46.1 ± 11.9 | |
| Median (IQR) | 44.0 (36.0–51.0) | 45.5 (38.0–51.8) | |
| Risser stage, n (%) | 0.246 | ||
| 1–2 | 32 (35.2) | 14 (36.8) | |
| 3–5 | 51 (56.0) | 17 (44.7) | |
| Not specified | 8 (8.8) | 7 (18.4) |
Abbreviation: IQR, interquartile range.