Value | Category | Cases | |
---|---|---|---|
-9 | Don't know (spontaneous) | 1 |
0.1%
|
-7 | Does not apply | 2 |
0.2%
|
0 | No obstacle | 489 |
40.2%
|
1 | Minor obstacle | 208 |
17.1%
|
2 | Moderate obstacle | 300 |
24.7%
|
3 | Major obstacle | 152 |
12.5%
|
4 | Very severe obstacle | 64 |
5.3%
|