| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 17 |
2.7%
|
| 1 | Not available | 398 |
62.5%
|
| 2 | Cost increased | 219 |
34.4%
|
| 3 | Lower quality | 3 |
0.5%
|
| Sysmiss | 323 |