| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 38 |
7.4%
|
| 2 | Monthly | 366 |
71.5%
|
| 3 | Less than once a month | 84 |
16.4%
|
| 4 | Never | 22 |
4.3%
|
| 5 | Don't know | 2 |
0.4%
|
| 6 | Refused | 0 |
0%
|
| Sysmiss | 488 |