| Value | Category | Cases | |
|---|---|---|---|
| -99 | Refuse to answer | 0 |
0%
|
| -88 | No answer | 0 |
0%
|
| -77 | Not applicable | 1 |
0.4%
|
| -66 | Don't know | 0 |
0%
|
| 0 | No obstacle | 53 |
21.2%
|
| 1 | Minor obstacle | 98 |
39.2%
|
| 2 | Moderate obstacle | 48 |
19.2%
|
| 3 | Major obstacle | 29 |
11.6%
|
| 4 | Very severe obstacle | 21 |
8.4%
|