| Value | Category | Cases | |
|---|---|---|---|
| -9 | do not know | 1 |
0.7%
|
| -7 | does not apply | 0 |
0%
|
| 0 | no obstacle | 24 |
16.2%
|
| 1 | minor obstacle | 40 |
27%
|
| 2 | moderate obstacle | 46 |
31.1%
|
| 3 | major obstacle | 28 |
18.9%
|
| 4 | very severe obstacle | 9 |
6.1%
|