| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 42 |
7.3%
|
| 2 | Monthly | 426 |
74.3%
|
| 3 | Less than once a month | 67 |
11.7%
|
| 4 | Never | 10 |
1.7%
|
| 5 | Don't know | 8 |
1.4%
|
| 6 | Refused | 20 |
3.5%
|
| Sysmiss | 427 |