| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 3 |
2.6%
|
| -6 | Still in progress | 2 |
1.8%
|
| 1 | One week or less | 44 |
38.6%
|
| 2 | 4 |
3.5%
|
|
| 3 | 2 |
1.8%
|
|
| 4 | 48 |
42.1%
|
|
| 6 | 1 |
0.9%
|
|
| 7 | 1 |
0.9%
|
|
| 8 | 1 |
0.9%
|
|
| 14 | 1 |
0.9%
|
|
| 15 | 1 |
0.9%
|
|
| 20 | 1 |
0.9%
|
|
| 30 | 4 |
3.5%
|
|
| 45 | 1 |
0.9%
|
|
| Sysmiss | 240 |