| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know | 7 |
1.5%
|
| -7 | Does not apply | 5 |
1%
|
| 0 | No Obstacle | 127 |
26.3%
|
| 1 | Minor Obstacle | 149 |
30.9%
|
| 2 | Moderate Obstacle | 104 |
21.6%
|
| 3 | Major Obstacle | 59 |
12.2%
|
| 4 | Very Severe Obstacle | 31 |
6.4%
|