|
|
| Frequency | Percent | Valid percent | Cumulative percent |
| Valid | Proximal | 22 | 7.1 | 7.1 | 7.1 |
| Middle | 41 | 13.2 | 13.2 | 20.3 | |
| Distal | 28 | 9.0 | 9.0 | 29.3 | |
| None | 220 | 70.7 | 70.7 | 100.0 | |
| Total | 311 | 100.0 | 100.0 |
|