| Value | Category | Cases | |
|---|---|---|---|
| 1 | Yes, more than monthly | 12 |
0.6%
|
| 2 | Yes, monthly | 26 |
1.2%
|
| 3 | Yes, several times but less than monthly | 40 |
1.9%
|
| 4 | Yes, once or twice | 176 |
8.2%
|
| 5 | No | 1881 |
88.1%
|
| Sysmiss | 21 |