Value | Category | Cases | |
---|---|---|---|
-9 | Don't know (spontaneous) | 20 |
0.2%
|
-7 | Does not apply | 13 |
0.1%
|
0 | No obstacle | 4173 |
44.5%
|
1 | Minor obstacle | 1629 |
17.4%
|
2 | Moderate obstacle | 1679 |
17.9%
|
3 | Major obstacle | 1495 |
15.9%
|
4 | Very severe obstacle | 367 |
3.9%
|