| Value | Category | Cases | |
|---|---|---|---|
| -99 | Refuse to answer | 0 |
0%
|
| -88 | No answer | 0 |
0%
|
| -77 | Not applicable | 0 |
0%
|
| -66 | Don't know | 0 |
0%
|
| 0 | No obstacle | 76 |
29.5%
|
| 1 | Minor obstacle | 148 |
57.4%
|
| 2 | Moderate obstacle | 26 |
10.1%
|
| 3 | Major obstacle | 8 |
3.1%
|
| 4 | Very severe obstacle | 0 |
0%
|