| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 16 |
7.3%
|
| 2 | Monthly | 83 |
37.7%
|
| 3 | Less than once a month | 105 |
47.7%
|
| 4 | Never | 14 |
6.4%
|
| 5 | Don't know | 2 |
0.9%
|
| 6 | Refused | 0 |
0%
|
| Sysmiss | 780 |