| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every week | 12 |
4%
|
| 2 | About twice a month | 37 |
12.4%
|
| 3 | About once a month | 80 |
26.8%
|
| 4 | About every two months | 42 |
14%
|
| 5 | About every three months | 105 |
35.1%
|
| 6 | About twice a year | 15 |
5%
|
| 7 | Once a year | 8 |
2.7%
|
| 99 | Not specified | 0 |
0%
|
| Sysmiss | 3699 |