| Value | Category | Cases | |
|---|---|---|---|
| -999999999 | 611 |
19%
|
|
| 1 | Training less than 1 year ago | 111 |
3.4%
|
| 2 | Training one year or more ago | 84 |
2.6%
|
| 3 | Never trained | 2416 |
75%
|