| Value | Category | Cases | |
|---|---|---|---|
| 0 | 11 |
0.4%
|
|
| 1 | Day | 370 |
12.8%
|
| 2 | Week | 534 |
18.5%
|
| 3 | Month | 701 |
24.3%
|
| 4 | Occas. | 1267 |
43.9%
|
| Sysmiss | 21837 |