| Value | Category | Cases | |
|---|---|---|---|
| 1 | Don't know | 50 |
2.1%
|
| 2 | Not Applicable | 21 |
0.9%
|
| 3 | 1 Not an obstacle | 243 |
10%
|
| 4 | 2 Minor obstacle | 555 |
22.9%
|
| 5 | 3 Moderate obstacle | 881 |
36.3%
|
| 6 | 4 Major obstacle | 674 |
27.8%
|