| Value | Category | Cases | |
|---|---|---|---|
| 1 | Daily or almost daily | 4 |
0.2%
|
| 2 | Weekly | 1 |
0.1%
|
| 3 | Monthly | 2 |
0.1%
|
| 4 | Less than monthly | 10 |
0.6%
|
| 5 | Never | 1706 |
99%
|
| Sysmiss | 1013 |