| Value | Category | Cases | |
|---|---|---|---|
| -999999999 | 611 |
19%
|
|
| 1 | Training less than 1 year ago | 423 |
13.1%
|
| 2 | Training one year or more ago | 517 |
16%
|
| 3 | Never trained | 1671 |
51.9%
|