| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 85 |
9.8%
|
| 2 | Monthly | 429 |
49.3%
|
| 3 | Less than once a month | 331 |
38%
|
| 4 | Don't know | 15 |
1.7%
|
| 5 | Refused | 10 |
1.1%
|
| Sysmiss | 2130 |