| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 22 |
6.2%
|
| 2 | Monthly | 182 |
51.3%
|
| 3 | Less than once a month | 54 |
15.2%
|
| 4 | Never | 71 |
20%
|
| 5 | Don't know | 22 |
6.2%
|
| 6 | Refused | 4 |
1.1%
|
| Sysmiss | 665 |