| No. of subjects | Sagittal Ra | Coronal Ra | Total Ra |
Low flow group (≤0.1 ml/min) | 53 (52.5%) | 51.0 ± 17.3 | 60.1 ± 18.8 | 55.6 ± 16.9 |
Normal flow group (>0.1 ml/min) | 48 (45.5%) | 54.2 ± 17.3 | 63.8 ± 17.5 | 59.0 ± 14.9 |