| Value | Category | Cases | |
|---|---|---|---|
| 1 | Yes, more than monthly | 12 |
0.8%
|
| 2 | Yes, monthly | 15 |
1%
|
| 3 | Yes, several times but less than monthly | 10 |
0.7%
|
| 4 | Yes, once or twice | 67 |
4.7%
|
| 5 | No | 1330 |
92.7%
|
| Sysmiss | 4 |