Value | Category | Cases | |
---|---|---|---|
-9 | Don't know (spontaneous) | 2 |
0.1%
|
-7 | Does not apply | 20 |
1.2%
|
0 | No obstacle | 434 |
25.2%
|
1 | Minor obstacle | 320 |
18.6%
|
2 | Moderate obstacle | 450 |
26.1%
|
3 | Major obstacle | 355 |
20.6%
|
4 | Very severe obstacle | 144 |
8.3%
|