| Value | Category | Cases | |
|---|---|---|---|
| 1 | Daily | 132 |
4%
|
| 2 | Weekly | 798 |
24.1%
|
| 3 | Monthly | 1655 |
50%
|
| 4 | Once a term | 505 |
15.3%
|
| 5 | Never | 219 |
6.6%
|
| Sysmiss | 18 |