| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 83 |
16.4%
|
| 2 | Monthly | 176 |
34.8%
|
| 3 | Less than once a month | 230 |
45.5%
|
| 4 | Never | 14 |
2.8%
|
| 5 | Don't know | 2 |
0.4%
|
| 6 | Refused | 1 |
0.2%
|
| Sysmiss | 494 |