| Value | Category | Cases | |
|---|---|---|---|
| 1 | Daily or almost daily | 18 |
0.5%
|
| 2 | Weekly | 15 |
0.5%
|
| 3 | Monthly | 34 |
1%
|
| 4 | Less than monthly | 265 |
8.1%
|
| 5 | Never | 2955 |
89.9%
|
| Sysmiss | 810 |