| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 117 |
19.7%
|
| 2 | Monthly | 159 |
26.7%
|
| 3 | Less than once a month | 300 |
50.4%
|
| 4 | Never | 7 |
1.2%
|
| 5 | Don't know | 8 |
1.3%
|
| 6 | Refused | 4 |
0.7%
|
| Sysmiss | 405 |