| Value | Category | Cases | |
|---|---|---|---|
| 0 | 2 |
0.3%
|
|
| 1 | Daily or almost daily | 33 |
5%
|
| 2 | Weekly | 34 |
5.1%
|
| 3 | Monthly | 28 |
4.2%
|
| 4 | Less than monthly | 52 |
7.9%
|
| 5 | Never | 513 |
77.5%
|
| Sysmiss | 1871 |