| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| -7 | Does not apply (spontaneous) | 0 |
0%
|
| 0 | Less than one day | 0 |
0%
|
| 1 | 5 |
55.6%
|
|
| 2 | 2 |
22.2%
|
|
| 3 | 2 |
22.2%
|
|
| Sysmiss | 142 |