| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 75 |
6.8%
|
| -7 | NE S’APPLIQUE PAS | 48 |
4.4%
|
| 0 | Not an obstacle | 188 |
17.2%
|
| 1 | Minor obstacle | 297 |
27.1%
|
| 2 | Moderate obstacle | 286 |
26.1%
|
| 3 | Major obstacle | 176 |
16.1%
|
| 4 | A very serious obstacle | 26 |
2.4%
|