| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 50 |
18.5%
|
| 2 | Monthly | 97 |
35.8%
|
| 3 | Less than once a month | 101 |
37.3%
|
| 4 | Never | 21 |
7.7%
|
| 5 | Don't know | 1 |
0.4%
|
| 6 | Refused | 1 |
0.4%
|
| Sysmiss | 729 |