| No. of subjects | Sagittal Ra | Coronal Ra | Total Ra |
Low group (0 - 4.9 mm) | 66 (64.1%) | 53.8 ± 18.1 | 64.0 ± 19.4 | 58.9 ± 17.3 |
Middle group (5 - 10 mm) | 13 (12.6%) | 53.2 ± 11.0 | 58.2 ± 15.4 | 55.7 ± 11.9 |
High group (>10 mm) | 24 (23.3%) | 48.5 ± 14.9 | 57.8 ± 15.6 | 53.1 ± 13.6 |