Value | Category | Cases | |
---|---|---|---|
-9 | Don't know (spontaneous) | 2 |
0.2%
|
-7 | Does not apply | 9 |
0.9%
|
0 | No obstacle | 155 |
16%
|
1 | Minor obstacle | 163 |
16.9%
|
2 | Moderate obstacle | 301 |
31.2%
|
3 | Major obstacle | 251 |
26%
|
4 | Very severe obstacle | 85 |
8.8%
|