| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 2 |
2%
|
| 1 | 1-2 production performance indicators | 40 |
39.2%
|
| 2 | 3-9 production performance indicators | 45 |
44.1%
|
| 3 | 10 or more production performance indicators | 15 |
14.7%
|
| Sysmiss | 209 |