| Value | Category | Cases | |
|---|---|---|---|
| -97 | Not applicable | 6 |
11.1%
|
| 1 | No obstacle | 39 |
72.2%
|
| 2 | Minor obstacle | 5 |
9.3%
|
| 3 | Moderate Obstacle | 1 |
1.9%
|
| 4 | Major obstacle | 3 |
5.6%
|
| 5 | Very severe obstacle | 0 |
0%
|
| 2147483622 | Don't know | 0 |
0%
|
| 2147483623 | Refused to respond | 0 |
0%
|
| 11 | .Z | 4063 |