| 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 | 31 |
12%
|
| 1 | Minor obstacle | 67 |
26%
|
| 2 | Moderate obstacle | 50 |
19.4%
|
| 3 | Major obstacle | 71 |
27.5%
|
| 4 | Very severe obstacle | 39 |
15.1%
|