| Value | Category | Cases | |
|---|---|---|---|
| -9 | do not know | 3 |
2%
|
| -7 | does not apply | 0 |
0%
|
| 0 | no obstacle | 42 |
28.4%
|
| 1 | minor obstacle | 35 |
23.6%
|
| 2 | moderate obstacle | 20 |
13.5%
|
| 3 | major obstacle | 31 |
20.9%
|
| 4 | very severe obstacle | 17 |
11.5%
|