| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 54 |
8.2%
|
| 2 | Monthly | 482 |
72.8%
|
| 3 | Less than once a month | 81 |
12.2%
|
| 4 | Never | 35 |
5.3%
|
| 5 | Don't know | 3 |
0.5%
|
| 6 | Refused | 7 |
1.1%
|
| Sysmiss | 338 |