| Value | Category | Cases | |
|---|---|---|---|
| 1 | Positive | 0 |
0%
|
| 2 | Negative | 0 |
0%
|
| 5 | Deprecated (not in IQ1, IQ2 and IQ3) | 0 |
0%
|
| 6 | Don't know | 0 |
0%
|
| 7 | Not sure | 1 |
50%
|
| 8 | Refused | 0 |
0%
|
| 9 | Missing | 1 |
50%
|
| Sysmiss | 3617 |