| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know | 29 |
6%
|
| -7 | Does not apply | 5 |
1%
|
| 0 | No Obstacle | 153 |
31.7%
|
| 1 | Minor Obstacle | 109 |
22.6%
|
| 2 | Moderate Obstacle | 79 |
16.4%
|
| 3 | Major Obstacle | 67 |
13.9%
|
| 4 | Very Severe Obstacle | 40 |
8.3%
|