| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 144 |
19.5%
|
| 2 | Monthly | 477 |
64.7%
|
| 3 | Less than once a month | 60 |
8.1%
|
| 4 | Never | 36 |
4.9%
|
| 5 | Don't know | 7 |
0.9%
|
| 6 | Refused | 13 |
1.8%
|
| Sysmiss | 263 |