| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 102 |
15.4%
|
| 2 | Monthly | 386 |
58.3%
|
| 3 | Less than once a month | 155 |
23.4%
|
| 4 | Never | 15 |
2.3%
|
| 5 | Don't know | 2 |
0.3%
|
| 6 | Refused | 2 |
0.3%
|
| Sysmiss | 338 |