| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 118 |
26.1%
|
| 2 | Monthly | 103 |
22.8%
|
| 3 | Less than once a month | 222 |
49.1%
|
| 4 | Never | 7 |
1.5%
|
| 5 | Don't know | 1 |
0.2%
|
| 6 | Refused | 1 |
0.2%
|
| Sysmiss | 548 |