| Value | Category | Cases | |
|---|---|---|---|
| -9 | don't know | 1 |
0.4%
|
| -7 | does not apply | 1 |
0.4%
|
| 0 | no obstacle | 85 |
30.8%
|
| 1 | minor obstacle | 59 |
21.4%
|
| 2 | moderate obstacle | 74 |
26.8%
|
| 3 | major obstacle | 34 |
12.3%
|
| 4 | very severe obstacle | 22 |
8%
|
| Sysmiss | 679 |