| Value | Category | Cases | |
|---|---|---|---|
| 1 | Every week | 68 |
22.8%
|
| 2 | About twice a month | 16 |
5.4%
|
| 3 | About once a month | 199 |
66.8%
|
| 4 | About every two months | 6 |
2%
|
| 5 | About every three months | 6 |
2%
|
| 6 | About twice a year | 2 |
0.7%
|
| 7 | Less often than twice a year | 1 |
0.3%
|
| 99 | Not specified | 0 |
0%
|
| Sysmiss | 3700 |