Value | Category | Cases | |
---|---|---|---|
-9 | Don't know (spontaneous) | 3 |
0.3%
|
-7 | Does not apply | 1 |
0.1%
|
0 | No obstacle | 440 |
44%
|
1 | Minor obstacle | 317 |
31.7%
|
2 | Moderate obstacle | 144 |
14.4%
|
3 | Major obstacle | 84 |
8.4%
|
4 | Very severe obstacle | 12 |
1.2%
|