Table 3.
Mean and standard deviation (SD) of the examined parameters and the results of t-test and ANOVA.
| Parameter | Control | AIS | t-test (p) | Low | Moderate | Severe | Very severe | One-way Anova (p) | |
|---|---|---|---|---|---|---|---|---|---|
| n= | 350 | 320 | 350/320 | 129 | 101 | 49 | 41 | 320 | |
| Age (year) | mean | 14.81 | 14.71 | 14.51 | 15.12 | 15.09 | 14.68 | ||
| SD | 2.43 | 2.31 | 2.66 | 2.41 | 2.24 | 1.82 | |||
| Femoral head diam. (mm) | mean | 41.89 | 41.66 | 0.251 | 41.96 | 41.10 | 41.54 | 41.19 | 0.413 |
| SD | 3.76 | 3.62 | 3.65 | 3.79 | 4.02 | 3.56 | |||
| Femoral offset (mm) | mean | 38.62 | 37.99 | 0.098 | 38.16 | 37.50 | 38.46 | 38.22 | 0.607 |
| SD | 5.29 | 4.67 | 4.51 | 4.79 | 5.62 | 3.55 | |||
| Neck length (mm) | mean | 48.51 | 48.11 | 0.735 | 49.01 | 47.99 | 48.74 | 47.70 | 0.494 |
| SD | 4.67 | 4.76 | 4.68 | 4.95 | 5.36 | 4.23 | |||
| Neck shaft angle (degree) | mean | 129.64 | 127.06 | >0.001 | 127.49 | 127.09 | 126.61 | 126.09 | 0.022 |
| SD | 4.50 | 3.85 | 3.65 | 4.37 | 3.52 | 3.25 | |||
| FM-FS (degree) | mean | 4.28 | 4.50 | 0.004 | 4.33 | 4.54 | 4.62 | 4.84 | 0.023 |
| SD | 1.11 | 0.95 | 0.92 | 0.93 | 0.98 | 0.99 | |||
| Femoral torsion (degree) | mean | 20.71 | 20.36 | 0.598 | 20.39 | 20.89 | 20.35 | 19.56 | 0.955 |
| SD | 9.70 | 9.88 | 9.65 | 9.36 | 11.09 | 7.81 |