| RF Concentration (%) | ||||||||
| Right Parotid | Left Parotid | Right Submandibular | Left Submandibular | |||||
| Case Group | Control Group | Case Group | Control Group | Case Group | Control Group | Case Group | Control Group | |
| Normal | 47.6 | 90.0 | 33.4 | 90.0 | 47.6 | 85.0 | 52.4 | 85.0 |
| Slight Reduction | - | 5.0 | 14.3 | 5.0 | 23.8 | 10.0 | 33.3 | 10.0 |
| Moderate Reduction | 19.0 | 5.0 | 14.3 | 5.0 | 9.5 | - | 9.5 | 5.0 |
| Severe Reduction | 14.4 | - | 14.3 | - | 14.3 | 5.0 | 4.8 | - |
| Absent | 19.0 | - | 23.7 | - | 4.8 | - | - | - |
| p-value | 0.004* | 0.001* | 0.116 | 0.07 | ||||