| Value | Category | Cases | |
|---|---|---|---|
| 1 | Daily or almost daily | 21 |
1.5%
|
| 2 | Weekly | 15 |
1.1%
|
| 3 | Monthly | 9 |
0.7%
|
| 4 | Less than monthly | 31 |
2.2%
|
| 5 | Never | 1303 |
94.5%
|
| Sysmiss | 4888 |