| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 1 km | 118 |
3.3%
|
| 2 | 1-5 km | 340 |
9.4%
|
| 3 | More than 5 km | 744 |
20.6%
|
| 4 | Not applicable | 2401 |
66.6%
|
| Sysmiss | 4 |