| Value | Category | Cases | |
|---|---|---|---|
| -9 | do not know | 1 |
0.7%
|
| -7 | does not apply | 8 |
5.4%
|
| 0 | no obstacle | 115 |
77.7%
|
| 1 | minor obstacle | 15 |
10.1%
|
| 2 | moderate obstacle | 4 |
2.7%
|
| 3 | major obstacle | 4 |
2.7%
|
| 4 | very severe obstacle | 1 |
0.7%
|