| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 5km | 3 |
3.4%
|
| 2 | Between 5-10km | 6 |
6.8%
|
| 3 | Between 10-20km | 15 |
17%
|
| 4 | More than 20km | 64 |
72.7%
|
| Sysmiss | 1155 |