| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 40 |
4.9%
|
| 2 | Monthly | 696 |
85.1%
|
| 3 | Less than once a month | 58 |
7.1%
|
| 4 | Never | 12 |
1.5%
|
| 5 | Don't know | 7 |
0.9%
|
| 6 | Refused | 5 |
0.6%
|
| Sysmiss | 182 |