| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 42 |
11.4%
|
| 2 | Monthly | 209 |
56.6%
|
| 3 | Less than once a month | 115 |
31.2%
|
| 4 | Don't know | 2 |
0.5%
|
| 5 | Refused | 1 |
0.3%
|
| Sysmiss | 631 |