| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 1 |
5%
|
| -5 | Refund still outstanding | 6 |
30%
|
| 1 | One week or less | 3 |
15%
|
| 3 | 6 |
30%
|
|
| 4 | 3 |
15%
|
|
| 21 | 1 |
5%
|
|
| Sysmiss | 345 |