| Value | Category | Cases | |
|---|---|---|---|
| 1 | Daily or almost daily | 7 |
0.2%
|
| 2 | Weekly | 17 |
0.4%
|
| 3 | Monthly | 87 |
2.2%
|
| 4 | Less than monthly | 536 |
13.5%
|
| 5 | Never | 3328 |
83.7%
|
| Sysmiss | 2679 |