| Value | Category | Cases | |
|---|---|---|---|
| -999999 | 1 |
0.1%
|
|
| -9 | DON'T KNOW | 6 |
0.6%
|
| -7 | DOES NOT APPLY | 3 |
0.3%
|
| 0 | No obstacle | 608 |
59%
|
| 1 | Minor obstacle | 226 |
21.9%
|
| 2 | Moderate obstacle | 115 |
11.2%
|
| 3 | Major obstacle | 61 |
5.9%
|
| 4 | Very severe obstacle | 10 |
1%
|
| Sysmiss | 2 |