| Value | Category | Cases | |
|---|---|---|---|
| -555 | -555 Other specify | 5 |
0.4%
|
| 1 | 1. Yes | 59 |
4.2%
|
| 2 | 2. No, used it at first, but don’t use it anymore | 29 |
2.1%
|
| Sysmiss | 1315 |
93.4%
|