| Value | Category | Cases | |
|---|---|---|---|
| -97 | Not applicable | 7 |
12.5%
|
| 1 | No obstacle | 35 |
62.5%
|
| 2 | Minor obstacle | 10 |
17.9%
|
| 3 | Moderate Obstacle | 2 |
3.6%
|
| 4 | Major obstacle | 2 |
3.6%
|
| 5 | Very severe obstacle | 0 |
0%
|
| 2147483622 | Don't know | 0 |
0%
|
| 2147483623 | Refused to respond | 0 |
0%
|
| 11 | .Z | 4061 |