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Differences between normal and flatfoot groups.
| Variable | Normal group (mean ± SD) | Flatfoot group (mean ± SD) | P value |
|---|---|---|---|
| Age (mo) | 65.63 ± 8.86 | 61.55 ± 9.64 | <.001* |
| Height (cm) | 111.45 ± 11.52 | 107.40 ± 12.91 | .011* |
| Weight (kg) | 20.10 ± 7.63 | 18.48 ± 3.57 | .054* |
| Beighton score | 5.153 ± 1.87 | 5.33 ± 2.026 | .404† |
| Thumb-to-forearm grade | 1.12 ± 0.82 | 1.30 ± 0.858 | .063† |
| Thumb-thrust grade | 1.11 ± 0.724 | 1.17 ± 0.785 | .449† |
