| Value | Category | Cases | |
|---|---|---|---|
| 1 | Don't know | 33 |
1.4%
|
| 2 | Not Applicable | 9 |
0.4%
|
| 3 | 1 Not an obstacle | 348 |
14.4%
|
| 4 | 2 Minor obstacle | 591 |
24.4%
|
| 5 | 3 Moderate obstacle | 890 |
36.7%
|
| 6 | 4 Major obstacle | 553 |
22.8%
|