| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 26 |
4.5%
|
| 2 | Monthly | 179 |
31.2%
|
| 3 | Less than once a month | 256 |
44.6%
|
| 4 | Never | 99 |
17.2%
|
| 5 | Don't know | 9 |
1.6%
|
| 6 | Refused | 5 |
0.9%
|
| Sysmiss | 427 |