| Value | Category | Cases | |
|---|---|---|---|
| 1 | Weekly | 37 |
7.2%
|
| 2 | Monthly | 394 |
76.7%
|
| 3 | Less than once a month | 59 |
11.5%
|
| 4 | Never | 13 |
2.5%
|
| 5 | Don't know | 7 |
1.4%
|
| 6 | Refused | 4 |
0.8%
|
| Sysmiss | 486 |