Value | Category | Cases | |
---|---|---|---|
-9 | Don't know (spontaneous) | 2 |
0.2%
|
-7 | Does not apply | 2 |
0.2%
|
0 | No obstacle | 41 |
3.1%
|
1 | Minor obstacle | 108 |
8.2%
|
2 | Moderate obstacle | 867 |
65.6%
|
3 | Major obstacle | 282 |
21.3%
|
4 | Very severe obstacle | 20 |
1.5%
|