| Value | Category | Cases | |
|---|---|---|---|
| 2 | More than 1 year ago | 217 |
81.9%
|
| 3 | Less than 1 year ago | 48 |
18.1%
|
| 4 | I have never feld I had a risk of being infected | 0 |
0%
|
| 93 | Prefer not to answer | 0 |
0%
|
| Sysmiss | 2799 |