| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 7 |
9.7%
|
| -7 | Does not apply (spontaneous) | 5 |
6.9%
|
| 0 | Less than one day | 0 |
0%
|
| 1 | 10 |
13.9%
|
|
| 2 | 11 |
15.3%
|
|
| 3 | 8 |
11.1%
|
|
| 5 | 5 |
6.9%
|
|
| 7 | 4 |
5.6%
|
|
| 10 | 8 |
11.1%
|
|
| 12 | 4 |
5.6%
|
|
| 15 | 10 |
13.9%
|
|
| Sysmiss | 926 |