| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 31 |
25.6%
|
| 2 | Monthly | 21 |
17.4%
|
| 3 | Less than once a month | 47 |
38.8%
|
| 4 | Never | 20 |
16.5%
|
| 5 | Don't know | 2 |
1.7%
|
| 6 | Refused | 0 |
0%
|
| Sysmiss | 879 |