| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 8 |
21.1%
|
| 0 | Less than one day | 8 |
21.1%
|
| 2 | 4 |
10.5%
|
|
| 3 | 2 |
5.3%
|
|
| 4 | 1 |
2.6%
|
|
| 5 | 2 |
5.3%
|
|
| 7 | 2 |
5.3%
|
|
| 10 | 3 |
7.9%
|
|
| 12 | 1 |
2.6%
|
|
| 14 | 5 |
13.2%
|
|
| 25 | 1 |
2.6%
|
|
| 30 | 1 |
2.6%
|
|
| Sysmiss | 330 |