| Value | Category | Cases | |
|---|---|---|---|
| 1 | Daily or almost daily | 9 |
0.3%
|
| 2 | Weekly | 18 |
0.7%
|
| 3 | Monthly | 14 |
0.5%
|
| 4 | Less than monthly | 38 |
1.4%
|
| 5 | Never | 2599 |
97.1%
|
| Sysmiss | 1374 |