| Value | Category | Cases | |
|---|---|---|---|
| 1 | Yes, more than monthly | 21 |
1.5%
|
| 2 | Yes, monthly | 30 |
2.2%
|
| 3 | Yes, several times but less than monthly | 86 |
6.2%
|
| 4 | Yes, once or twice | 239 |
17.3%
|
| 5 | No | 1009 |
72.9%
|
| Sysmiss | 2 |