| Value | Category | Cases | |
|---|---|---|---|
| 0 | 0. never | 1460 |
96.1%
|
| 1 | 1. yes, more than a year ago | 31 |
2%
|
| 2 | 2. yes, in the last year | 28 |
1.8%
|
| Sysmiss | 44 |