| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 125 |
15.2%
|
| 2 | Monthly | 608 |
73.9%
|
| 3 | Less than once a month | 64 |
7.8%
|
| 4 | Never | 3 |
0.4%
|
| 5 | Don't know | 5 |
0.6%
|
| 6 | Refused | 18 |
2.2%
|
| Sysmiss | 177 |