| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 0 | Less than one day | 0 |
0%
|
| 1 | 1 |
14.3%
|
|
| 3 | 1 |
14.3%
|
|
| 5 | 3 |
42.9%
|
|
| 8 | 1 |
14.3%
|
|
| 20 | 1 |
14.3%
|
|
| Sysmiss | 912 |