| Value | Category | Cases | |
|---|---|---|---|
| 1 | Yes, more than monthly | 52 |
0.8%
|
| 2 | Yes, monthly | 40 |
0.6%
|
| 3 | Yes, several times but less than monthly | 82 |
1.3%
|
| 4 | Yes, once or twice | 181 |
2.9%
|
| 5 | No | 5911 |
94.3%
|
| Sysmiss | 1 |