| Value | Category | Cases | |
|---|---|---|---|
| -999 | Don't know | 0 |
0%
|
| -888 | Other(specify) | 0 |
0%
|
| 1 | Anytime | 13 |
54.2%
|
| 2 | Monthly | 4 |
16.7%
|
| 3 | Yearly | 7 |
29.2%
|
| Sysmiss | 380 |