| Value | Category | Cases | |
|---|---|---|---|
| -9 | don't know | 4 |
2.5%
|
| -7 | does not apply | 4 |
2.5%
|
| 0 | no obstacle | 95 |
59.4%
|
| 1 | minor obstacle | 12 |
7.5%
|
| 2 | moderate obstacle | 25 |
15.6%
|
| 3 | major obstacle | 12 |
7.5%
|
| 4 | very severe obstacle | 8 |
5%
|
| Sysmiss | 1835 |