| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know | 8 |
1.7%
|
| -7 | Does not apply | 0 |
0%
|
| 0 | No Obstacle | 219 |
45.4%
|
| 1 | Minor Obstacle | 127 |
26.3%
|
| 2 | Moderate Obstacle | 76 |
15.8%
|
| 3 | Major Obstacle | 35 |
7.3%
|
| 4 | Very Severe Obstacle | 17 |
3.5%
|