| Value | Category | Cases | |
|---|---|---|---|
| 1 | yes, weekly | 4 |
0.1%
|
| 2 | yes, monthly | 330 |
5.6%
|
| 3 | yes, yearly | 54 |
0.9%
|
| 4 | no | 5473 |
92.1%
|
| 8 | don't know | 81 |
1.4%
|
| Sysmiss | 543 |