| Value | Category | Cases | |
|---|---|---|---|
| 1 | Daily or almost daily | 11 |
0.6%
|
| 2 | Weekly | 13 |
0.7%
|
| 3 | Monthly | 24 |
1.2%
|
| 4 | Less than monthly | 178 |
9.1%
|
| 5 | Never | 1738 |
88.5%
|
| Sysmiss | 2508 |