| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 2 |
0.5%
|
| 1 | Not available | 211 |
51%
|
| 2 | Cost increased | 196 |
47.3%
|
| 3 | Lower quality | 5 |
1.2%
|
| Sysmiss | 187 |