| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 96 |
11.3%
|
| 2 | Monthly | 540 |
63.7%
|
| 3 | Less than once a month | 160 |
18.9%
|
| 4 | Never | 38 |
4.5%
|
| 5 | Don't know | 12 |
1.4%
|
| 6 | Refused | 2 |
0.2%
|
| Sysmiss | 152 |