| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 2 |
3.1%
|
| 0 | Less than one day | 21 |
32.8%
|
| 1 | 10 |
15.6%
|
|
| 2 | 10 |
15.6%
|
|
| 3 | 7 |
10.9%
|
|
| 4 | 4 |
6.3%
|
|
| 5 | 2 |
3.1%
|
|
| 7 | 3 |
4.7%
|
|
| 10 | 2 |
3.1%
|
|
| 14 | 2 |
3.1%
|
|
| 55 | 1 |
1.6%
|
|
| Sysmiss | 204 |