| 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 | 28 |
11.2%
|
| 1 | Minor obstacle | 135 |
54%
|
| 2 | Moderate obstacle | 58 |
23.2%
|
| 3 | Major obstacle | 17 |
6.8%
|
| 4 | Very severe obstacle | 12 |
4.8%
|