| Value | Category | Cases | |
|---|---|---|---|
| 1 | Don't know | 19 |
0.8%
|
| 2 | Not Applicable | 9 |
0.4%
|
| 3 | 1 Not an obstacle | 426 |
17.6%
|
| 4 | 2 Minor obstacle | 634 |
26.2%
|
| 5 | 3 Moderate obstacle | 884 |
36.5%
|
| 6 | 4 Major obstacle | 452 |
18.6%
|