| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every month | 567 |
19.9%
|
| 2 | Some months but not every month | 1673 |
58.8%
|
| 3 | Only 1 or 2 months | 603 |
21.2%
|
| 4 | 2 |
0.1%
|
|
| 5 | 2 |
0.1%
|
|
| Sysmiss | 5728 |