| Value | Category | Cases | |
|---|---|---|---|
| 1 | Daily or almost daily | 5 |
0.6%
|
| 2 | Weekly | 6 |
0.7%
|
| 3 | Monthly | 11 |
1.3%
|
| 4 | Less than monthly | 9 |
1.1%
|
| 5 | Never | 789 |
96.2%
|
| Sysmiss | 618 |