Value | Category | Cases | |
---|---|---|---|
-9 | Don't know (spontaneous) | 2 |
0.2%
|
-7 | Does not apply | 8 |
0.8%
|
0 | No obstacle | 728 |
71.1%
|
1 | Minor obstacle | 180 |
17.6%
|
2 | Moderate obstacle | 65 |
6.3%
|
3 | Major obstacle | 37 |
3.6%
|
4 | Very severe obstacle | 4 |
0.4%
|