| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every month | 458 |
20.1%
|
| 2 | Some months but not every month | 1343 |
59%
|
| 3 | Only 1 or 2 months | 459 |
20.2%
|
| 4 | 2 |
0.1%
|
|
| 5 | 2 |
0.1%
|
|
| 77 | 2 |
0.1%
|
|
| 88 | 9 |
0.4%
|
|
| Sysmiss | 6300 |