| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 74 |
13.5%
|
| 2 | Monthly | 141 |
25.7%
|
| 3 | Less than once a month | 297 |
54.1%
|
| 4 | Never | 29 |
5.3%
|
| 5 | Don't know | 8 |
1.5%
|
| 6 | Refused | 0 |
0%
|
| Sysmiss | 451 |