| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 5 |
1.3%
|
| 2 | Monthly | 244 |
64.9%
|
| 3 | Less than once a month | 81 |
21.5%
|
| 4 | Never | 39 |
10.4%
|
| 5 | Don't know | 4 |
1.1%
|
| 6 | Refused | 3 |
0.8%
|
| Sysmiss | 624 |