| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 42 |
18.7%
|
| 2 | Monthly | 96 |
42.7%
|
| 3 | Less than once a month | 55 |
24.4%
|
| 4 | Never | 16 |
7.1%
|
| 5 | Don't know | 3 |
1.3%
|
| 6 | Refused | 13 |
5.8%
|
| Sysmiss | 905 |