| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every week | 121 |
47.1%
|
| 2 | Each month | 121 |
47.1%
|
| 3 | Each quarter | 2 |
0.8%
|
| 4 | Every year | 9 |
3.5%
|
| 5 | Once at adhesion | 4 |
1.6%
|
| Sysmiss | 63 |