| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 1 |
2.2%
|
| -6 | Still in progress | 1 |
2.2%
|
| 1 | One week or less | 16 |
34.8%
|
| 2 | 4 |
8.7%
|
|
| 4 | 16 |
34.8%
|
|
| 7 | 2 |
4.3%
|
|
| 8 | 1 |
2.2%
|
|
| 12 | 1 |
2.2%
|
|
| 14 | 2 |
4.3%
|
|
| 30 | 2 |
4.3%
|
|
| Sysmiss | 57 |