| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know | 5 |
1%
|
| -7 | Does not apply | 6 |
1.2%
|
| 0 | No Obstacle | 190 |
39.4%
|
| 1 | Minor Obstacle | 132 |
27.4%
|
| 2 | Moderate Obstacle | 96 |
19.9%
|
| 3 | Major Obstacle | 30 |
6.2%
|
| 4 | Very Severe Obstacle | 23 |
4.8%
|