| 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 | 13 |
5.2%
|
| 1 | Minor obstacle | 47 |
18.8%
|
| 2 | Moderate obstacle | 79 |
31.6%
|
| 3 | Major obstacle | 49 |
19.6%
|
| 4 | Very severe obstacle | 62 |
24.8%
|