Value | Category | Cases | |
---|---|---|---|
-9 | Don't know (spontaneous) | 1 |
0.1%
|
-7 | Does not apply | 7 |
0.6%
|
0 | No obstacle | 120 |
10%
|
1 | Minor obstacle | 150 |
12.5%
|
2 | Moderate obstacle | 163 |
13.6%
|
3 | Major obstacle | 322 |
26.8%
|
4 | Very severe obstacle | 437 |
36.4%
|