| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 2 |
0.6%
|
| 1 | Not available | 244 |
74.8%
|
| 2 | Cost increased | 77 |
23.6%
|
| 3 | Lower quality | 3 |
0.9%
|
| Sysmiss | 246 |