| Value | Category | Cases | |
|---|---|---|---|
| -9 | do not know | 0 |
0%
|
| -7 | does not apply | 0 |
0%
|
| 0 | no obstacle | 55 |
37.2%
|
| 1 | minor obstacle | 67 |
45.3%
|
| 2 | moderate obstacle | 20 |
13.5%
|
| 3 | major obstacle | 5 |
3.4%
|
| 4 | very severe obstacle | 1 |
0.7%
|