| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 2 |
4.7%
|
| -7 | Does not apply (spontaneous) | 3 |
7%
|
| 0 | Less than one day | 5 |
11.6%
|
| 1 | 9 |
20.9%
|
|
| 2 | 10 |
23.3%
|
|
| 3 | 4 |
9.3%
|
|
| 5 | 5 |
11.6%
|
|
| 7 | 4 |
9.3%
|
|
| 10 | 1 |
2.3%
|
|
| Sysmiss | 311 |