Value | Category | Cases | |
---|---|---|---|
-9 | Don't know (spontaneous) | 1 |
0.1%
|
-7 | Does not apply | 50 |
6.9%
|
0 | No obstacle | 551 |
76.2%
|
1 | Minor obstacle | 61 |
8.4%
|
2 | Moderate obstacle | 44 |
6.1%
|
3 | Major obstacle | 13 |
1.8%
|
4 | Very severe obstacle | 3 |
0.4%
|