| 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 | 75 |
30%
|
| 1 | Minor obstacle | 111 |
44.4%
|
| 2 | Moderate obstacle | 40 |
16%
|
| 3 | Major obstacle | 18 |
7.2%
|
| 4 | Very severe obstacle | 6 |
2.4%
|