| Value | Category | Cases | |
|---|---|---|---|
| 1 | Yes, more than monthly | 70 |
2.8%
|
| 2 | Yes, monthly | 36 |
1.4%
|
| 3 | Yes, several times but less than monthly | 80 |
3.2%
|
| 4 | Yes, once or twice | 174 |
6.9%
|
| 5 | No | 2160 |
85.7%
|
| Sysmiss | 13 |