| Value | Category | Cases | |
|---|---|---|---|
| -9 | DON'T KNOW | 18 |
0.3%
|
| -7 | DOES NOT APPLY | 37 |
0.5%
|
| 0 | No obstacle | 3413 |
47.6%
|
| 1 | Minor obstacle | 1712 |
23.9%
|
| 2 | Moderate obstacle | 1285 |
17.9%
|
| 3 | Major obstacle | 560 |
7.8%
|
| 4 | Very severe obstacle | 140 |
2%
|
| Sysmiss | 11492 |