| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 108 |
13.7%
|
| 2 | Monthly | 240 |
30.4%
|
| 3 | Less than once a month | 251 |
31.8%
|
| 4 | Never | 168 |
21.3%
|
| 5 | Don't know | 13 |
1.6%
|
| 6 | Refused | 10 |
1.3%
|
| Sysmiss | 210 |