Value | Category | Cases | |
---|---|---|---|
-9 | Don't know (spontaneous) | 1 |
0.1%
|
-7 | Does not apply | 4 |
0.3%
|
0 | No obstacle | 559 |
43%
|
1 | Minor obstacle | 402 |
30.9%
|
2 | Moderate obstacle | 244 |
18.8%
|
3 | Major obstacle | 74 |
5.7%
|
4 | Very severe obstacle | 16 |
1.2%
|