| Value | Category | Cases | |
|---|---|---|---|
| 0 | Never | 1633 |
74.4%
|
| 1 | occasionally | 376 |
17.1%
|
| 2 | weekly | 117 |
5.3%
|
| 3 | daily | 69 |
3.1%
|
| Sysmiss | 12881 |