| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know | 2 |
0.4%
|
| -7 | Does not apply | 0 |
0%
|
| 0 | No Obstacle | 13 |
2.7%
|
| 1 | Minor Obstacle | 86 |
17.8%
|
| 2 | Moderate Obstacle | 100 |
20.7%
|
| 3 | Major Obstacle | 113 |
23.4%
|
| 4 | Very Severe Obstacle | 168 |
34.9%
|