| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 6 |
4.6%
|
| -7 | Does not apply (spontaneous) | 27 |
20.6%
|
| 0 | Less than one day | 45 |
34.4%
|
| 1 | 6 |
4.6%
|
|
| 2 | 17 |
13%
|
|
| 3 | 9 |
6.9%
|
|
| 4 | 6 |
4.6%
|
|
| 5 | 5 |
3.8%
|
|
| 6 | 1 |
0.8%
|
|
| 7 | 6 |
4.6%
|
|
| 20 | 1 |
0.8%
|
|
| 21 | 1 |
0.8%
|
|
| 30 | 1 |
0.8%
|
|
| Sysmiss | 229 |