| Value | Category | Cases | |
|---|---|---|---|
| -999999 | 1 |
0.1%
|
|
| -9 | DON'T KNOW | 4 |
0.4%
|
| -7 | DOES NOT APPLY | 2 |
0.2%
|
| 0 | No obstacle | 471 |
45.7%
|
| 1 | Minor obstacle | 160 |
15.5%
|
| 2 | Moderate obstacle | 180 |
17.5%
|
| 3 | Major obstacle | 157 |
15.2%
|
| 4 | Very severe obstacle | 55 |
5.3%
|
| Sysmiss | 2 |