| Value | Category | Cases | |
|---|---|---|---|
| -999999 | 1 |
0.1%
|
|
| -9 | DON'T KNOW | 4 |
0.4%
|
| -7 | DOES NOT APPLY | 3 |
0.3%
|
| 0 | No obstacle | 455 |
44.2%
|
| 1 | Minor obstacle | 216 |
21%
|
| 2 | Moderate obstacle | 164 |
15.9%
|
| 3 | Major obstacle | 165 |
16%
|
| 4 | Very severe obstacle | 22 |
2.1%
|
| Sysmiss | 2 |