| Value | Category | Cases | |
|---|---|---|---|
| 1 | Daily or almost daily | 15 |
0.6%
|
| 2 | Weekly | 7 |
0.3%
|
| 3 | Monthly | 11 |
0.4%
|
| 4 | Less than monthly | 87 |
3.2%
|
| 5 | Never | 2552 |
94.6%
|
| 8 | 27 |
1%
|
|
| Sysmiss | 1736 |