| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 0 | Less than one day | 0 |
0%
|
| 2 | 2 |
18.2%
|
|
| 4 | 1 |
9.1%
|
|
| 5 | 2 |
18.2%
|
|
| 7 | 3 |
27.3%
|
|
| 10 | 1 |
9.1%
|
|
| 12 | 1 |
9.1%
|
|
| 15 | 1 |
9.1%
|
|
| Sysmiss | 353 |