| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know | 30 |
11.1%
|
| -8 | Refused | 1 |
0.4%
|
| -7 | DOES NOT APPLY | 7 |
2.6%
|
| 0 | No obstacle | 52 |
19.3%
|
| 1 | Minor obstacle | 25 |
9.3%
|
| 2 | Moderate obstacle | 33 |
12.2%
|
| 3 | Major obstacle | 51 |
18.9%
|
| 4 | Very severe obstacle | 71 |
26.3%
|
| Sysmiss | 685 |