Value | Category | Cases | |
---|---|---|---|
-9 | Don't know (spontaneous) | 1 |
0.3%
|
-7 | Does not apply | 2 |
0.6%
|
0 | No obstacle | 223 |
63%
|
1 | Minor obstacle | 40 |
11.3%
|
2 | Moderate obstacle | 57 |
16.1%
|
3 | Major obstacle | 24 |
6.8%
|
4 | Very severe obstacle | 7 |
2%
|