| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know | 0 |
0%
|
| -7 | Does not apply | 5 |
1%
|
| 0 | No Obstacle | 170 |
35.3%
|
| 1 | Minor Obstacle | 142 |
29.5%
|
| 2 | Moderate Obstacle | 110 |
22.8%
|
| 3 | Major Obstacle | 41 |
8.5%
|
| 4 | Very Severe Obstacle | 14 |
2.9%
|