| Value | Category | Cases | |
|---|---|---|---|
| 1 | Daily or almost daily | 2 |
0.5%
|
| 2 | Weekly | 21 |
5.7%
|
| 3 | Monthly | 16 |
4.4%
|
| 4 | Less than monthly | 44 |
12%
|
| 5 | Never | 284 |
77.4%
|
| Sysmiss | 187 |