| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 6 |
3.2%
|
| -6 | Still in progress | 0 |
0%
|
| 1 | One week or less | 103 |
54.8%
|
| 2 | 20 |
10.6%
|
|
| 3 | 5 |
2.7%
|
|
| 4 | 46 |
24.5%
|
|
| 5 | 1 |
0.5%
|
|
| 12 | 1 |
0.5%
|
|
| 15 | 1 |
0.5%
|
|
| 20 | 1 |
0.5%
|
|
| 30 | 4 |
2.1%
|
|
| Sysmiss | 169 |