Value | Category | Cases | |
---|---|---|---|
-9 | Don't know (spontaneous) | 1 |
0.1%
|
-7 | Does not apply | 8 |
0.8%
|
0 | No obstacle | 510 |
50.3%
|
1 | Minor obstacle | 251 |
24.8%
|
2 | Moderate obstacle | 181 |
17.9%
|
3 | Major obstacle | 58 |
5.7%
|
4 | Very severe obstacle | 4 |
0.4%
|