| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 1 |
4.3%
|
| -6 | Still in progress | 0 |
0%
|
| 1 | One week or less | 10 |
43.5%
|
| 4 | 8 |
34.8%
|
|
| 12 | 4 |
17.4%
|
|
| Sysmiss | 125 |