| Value | Category | Cases | |
|---|---|---|---|
| 1 | Don't know | 36 |
1.5%
|
| 2 | Not Applicable | 35 |
1.4%
|
| 3 | 1 Not an obstacle | 429 |
17.7%
|
| 4 | 2 Minor obstacle | 560 |
23.1%
|
| 5 | 3 Moderate obstacle | 722 |
29.8%
|
| 6 | 4 Major obstacle | 642 |
26.5%
|