| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 29 |
12.8%
|
| 2 | Monthly | 108 |
47.8%
|
| 3 | Less than once a month | 62 |
27.4%
|
| 4 | Never | 20 |
8.8%
|
| 5 | Don't know | 6 |
2.7%
|
| 6 | Refused | 1 |
0.4%
|
| Sysmiss | 774 |