| Value | Category | Cases | |
|---|---|---|---|
| 1 | Daily or almost daily | 8 |
0.2%
|
| 2 | Weekly | 26 |
0.6%
|
| 3 | Monthly | 54 |
1.3%
|
| 4 | Less than monthly | 180 |
4.5%
|
| 5 | Never | 3766 |
93.4%
|
| Sysmiss | 976 |