| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 1 |
12.5%
|
| -7 | Does not apply (spontaneous) | 0 |
0%
|
| 0 | Less than one day | 3 |
37.5%
|
| 1 | 1 |
12.5%
|
|
| 3 | 1 |
12.5%
|
|
| 10 | 1 |
12.5%
|
|
| 21 | 1 |
12.5%
|
|
| Sysmiss | 149 |