| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 104 |
20.6%
|
| 2 | Monthly | 158 |
31.2%
|
| 3 | Less than once a month | 229 |
45.3%
|
| 4 | Never | 14 |
2.8%
|
| 5 | Don't know | 1 |
0.2%
|
| 6 | Refused | 0 |
0%
|
| Sysmiss | 494 |