| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 55 |
10.9%
|
| 2 | Monthly | 154 |
30.6%
|
| 3 | Less than once a month | 266 |
52.8%
|
| 4 | Never | 25 |
5%
|
| 5 | Don't know | 4 |
0.8%
|
| 6 | Refused | 0 |
0%
|
| Sysmiss | 564 |