| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 12 |
22.6%
|
| -6 | Still in progress | 4 |
7.5%
|
| 1 | One week or less | 22 |
41.5%
|
| 2 | 1 |
1.9%
|
|
| 3 | 1 |
1.9%
|
|
| 4 | 2 |
3.8%
|
|
| 5 | 3 |
5.7%
|
|
| 8 | 1 |
1.9%
|
|
| 15 | 2 |
3.8%
|
|
| 16 | 1 |
1.9%
|
|
| 18 | 1 |
1.9%
|
|
| 20 | 1 |
1.9%
|
|
| 30 | 1 |
1.9%
|
|
| 40 | 1 |
1.9%
|
|
| Sysmiss | 545 |