| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 79 |
12.9%
|
| 2 | Monthly | 268 |
43.6%
|
| 3 | Less than once a month | 139 |
22.6%
|
| 4 | Never | 71 |
11.6%
|
| 5 | Don't know | 54 |
8.8%
|
| 6 | Refused | 3 |
0.5%
|
| Sysmiss | 406 |