| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 166 |
27.6%
|
| 2 | Monthly | 289 |
48.1%
|
| 3 | Less than once a month | 141 |
23.5%
|
| 4 | Don't know | 1 |
0.2%
|
| 5 | Refused | 4 |
0.7%
|
| Sysmiss | 399 |