| Value | Category | Cases | |
|---|---|---|---|
| 1 | Daily or almost daily | 23 |
0.6%
|
| 2 | Weekly | 10 |
0.3%
|
| 3 | Monthly | 30 |
0.8%
|
| 4 | Less than monthly | 132 |
3.7%
|
| 5 | Never | 3404 |
94.6%
|
| Sysmiss | 1208 |