| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 1 km | 80 |
2.5%
|
| 2 | 1-5 km | 339 |
10.5%
|
| 3 | More than 5 km | 659 |
20.5%
|
| 4 | Not applicable | 2138 |
66.4%
|
| Sysmiss | 4 |