| 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 | 63 |
24.4%
|
| 1 | Minor obstacle | 90 |
34.9%
|
| 2 | Moderate obstacle | 37 |
14.3%
|
| 3 | Major obstacle | 37 |
14.3%
|
| 4 | Very severe obstacle | 31 |
12%
|