| Value | Category | Cases | |
|---|---|---|---|
| 0 | 1 |
0.4%
|
|
| 1 | Daily or almost daily | 15 |
6.2%
|
| 2 | Weekly | 28 |
11.5%
|
| 3 | Monthly | 31 |
12.8%
|
| 4 | Less than monthly | 54 |
22.2%
|
| 5 | Never | 114 |
46.9%
|
| Sysmiss | 912 |