| Value | Category | Cases | |
|---|---|---|---|
| -99 | Don't know | 0 |
0%
|
| -66 | Refuse to answer | 1 |
0.1%
|
| 1 | Only once or twice | 299 |
41.4%
|
| 2 | In some months but not every month | 315 |
43.6%
|
| 3 | Almost every month | 107 |
14.8%
|
| Sysmiss | 657 |