| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know | 2 |
0.4%
|
| -7 | Does not apply | 0 |
0%
|
| 0 | No Obstacle | 137 |
28.4%
|
| 1 | Minor Obstacle | 144 |
29.9%
|
| 2 | Moderate Obstacle | 92 |
19.1%
|
| 3 | Major Obstacle | 57 |
11.8%
|
| 4 | Very Severe Obstacle | 50 |
10.4%
|