| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 15 |
9.4%
|
| 2 | Monthly | 57 |
35.8%
|
| 3 | Less than once a month | 73 |
45.9%
|
| 4 | Never | 13 |
8.2%
|
| 5 | Don't know | 1 |
0.6%
|
| 6 | Refused | 0 |
0%
|
| Sysmiss | 841 |