Value | Category | Cases | |
---|---|---|---|
-9 | Don't know (spontaneous) | 3 |
0.5%
|
-7 | Does not apply | 1 |
0.2%
|
0 | No obstacle | 122 |
20.3%
|
1 | Minor obstacle | 128 |
21.3%
|
2 | Moderate obstacle | 182 |
30.3%
|
3 | Major obstacle | 121 |
20.1%
|
4 | Very severe obstacle | 44 |
7.3%
|