| Value | Category | Cases | |
|---|---|---|---|
| 1 | Once a week or more | 12 |
3.9%
|
| 2 | Every 2 weeks | 14 |
4.5%
|
| 3 | Once a month | 274 |
89%
|
| 4 | Once in 6 months | 0 |
0%
|
| 5 | Only once | 8 |
2.6%
|
| Sysmiss | 205 |