| Value | Category | Cases | |
|---|---|---|---|
| 1 | Daily or almost daily | 14 |
0.8%
|
| 2 | Weekly | 10 |
0.6%
|
| 3 | Monthly | 17 |
1%
|
| 4 | Less than monthly | 51 |
3%
|
| 5 | Never | 1631 |
94.7%
|
| Sysmiss | 1013 |