Table 1 Mean (range) of demographic and deformity parameters at different time points
Parameters | Time point 1 | Time point 2 | p value |
|---|---|---|---|
Age (years) | 13.3 (10.3–17.8) | 16.1 (12.5–22) | < 0.001 |
Time from menarche (females only) (years) | 0.3 (− 3.5–5.9) | 3.2 (− 0.1–8.7) | < 0.001 |
Height (centimeter) | 153.7(116.5–186) | 162.4(136–187) | < 0.001 |
Weight (pound) | 115.5(60–310) | 138.7(76–321) | < 0.001 |
Body mass index (index) | 21.6 (14.9–46) | 23.1 (15.6–41.7) | < 0.005 |
Risser sign (index) | 2 (0–4) | 4.1 (0–5) | < 0.001 |
Major curve Cobb angle (degree) | 21.6 (2–42) | 26.3 (2–49) | < 0.001 |
Nash/Moe (index) of the apex vertebra | 1.3 (1–4) | 1.6 (1–4) | < 0.001 |
Iliac crest height difference (millimeter) | 5.2 (0–17) | 6 (0–20) | = 0.05 |
Sacral takeoff angle (degree) | 3 (0–13) | 3.4 (0–17) | < 0.05 |
Femoral head height difference (millimeter) | 3.8 (0–14) | 4.1 (0–16) | = 0.41 |