| Value | Category | Cases | |
|---|---|---|---|
| -9 | DON'T KNOW | 16 |
0.2%
|
| -7 | DOES NOT APPLY | 26 |
0.3%
|
| 0 | No obstacle | 4381 |
47.2%
|
| 1 | Minor obstacle | 2244 |
24.2%
|
| 2 | Moderate obstacle | 1782 |
19.2%
|
| 3 | Major obstacle | 565 |
6.1%
|
| 4 | Very severe obstacle | 267 |
2.9%
|
| Sysmiss | 9376 |