| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 7 |
1.6%
|
| 1 | 1-2 production performance indicators | 214 |
48.6%
|
| 2 | 3-9 production performance indicators | 182 |
41.4%
|
| 3 | 10 or more production performance indicators | 37 |
8.4%
|
| Sysmiss | 161 |