| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 12 |
9.2%
|
| 2 | Monthly | 25 |
19.2%
|
| 3 | Less than once a month | 79 |
60.8%
|
| 4 | Never | 11 |
8.5%
|
| 5 | Don't know | 3 |
2.3%
|
| 6 | Refused | 0 |
0%
|
| Sysmiss | 870 |