| Value | Category | Cases | |
|---|---|---|---|
| -9 | don't know | 6 |
4.2%
|
| -7 | does not apply | 6 |
4.2%
|
| 0 | no obstacle | 60 |
42.3%
|
| 1 | minor obstacle | 11 |
7.7%
|
| 2 | moderate obstacle | 26 |
18.3%
|
| 3 | major obstacle | 20 |
14.1%
|
| 4 | very severe obstacle | 13 |
9.2%
|
| Sysmiss | 944 |