| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 122 |
20%
|
| 2 | Monthly | 236 |
38.7%
|
| 3 | Less than once a month | 219 |
35.9%
|
| 4 | Never | 21 |
3.4%
|
| 5 | Don't know | 11 |
1.8%
|
| 6 | Refused | 1 |
0.2%
|
| Sysmiss | 390 |