| Value | Category | Cases | |
|---|---|---|---|
| -97 | Not applicable | 9 |
15.8%
|
| 1 | No obstacle | 35 |
61.4%
|
| 2 | Minor obstacle | 5 |
8.8%
|
| 3 | Moderate Obstacle | 3 |
5.3%
|
| 4 | Major obstacle | 3 |
5.3%
|
| 5 | Very severe obstacle | 2 |
3.5%
|
| 2147483622 | Don't know | 0 |
0%
|
| 2147483623 | Refused to respond | 0 |
0%
|
| 11 | .Z | 4060 |