| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 0 | Less than one day | 5 |
38.5%
|
| 1 | 1 |
7.7%
|
|
| 2 | 4 |
30.8%
|
|
| 3 | 2 |
15.4%
|
|
| 10 | 1 |
7.7%
|
|
| Sysmiss | 338 |