| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 5 |
20%
|
| -5 | Refund still outstanding | 5 |
20%
|
| 1 | One week or less | 2 |
8%
|
| 4 | 9 |
36%
|
|
| 6 | 1 |
4%
|
|
| 8 | 2 |
8%
|
|
| 12 | 1 |
4%
|
|
| Sysmiss | 339 |