| 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 | 25 |
10%
|
| 1 | Minor obstacle | 53 |
21.2%
|
| 2 | Moderate obstacle | 62 |
24.8%
|
| 3 | Major obstacle | 56 |
22.4%
|
| 4 | Very severe obstacle | 54 |
21.6%
|