| Value | Category | Cases | |
|---|---|---|---|
| -998 | Dont know | 2 |
1.7%
|
| -888 | Other (specify) | 1 |
0.9%
|
| 1 | Less than once a month | 15 |
12.8%
|
| 2 | Once a month | 23 |
19.7%
|
| 3 | Twice a month | 76 |
65%
|
| Sysmiss | 3 |