| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 1 |
1.1%
|
| -7 | Does not apply (spontaneous) | 26 |
28%
|
| 0 | Less than one day | 10 |
10.8%
|
| 1 | 6 |
6.5%
|
|
| 2 | 6 |
6.5%
|
|
| 3 | 11 |
11.8%
|
|
| 4 | 2 |
2.2%
|
|
| 5 | 6 |
6.5%
|
|
| 6 | 1 |
1.1%
|
|
| 7 | 13 |
14%
|
|
| 12 | 1 |
1.1%
|
|
| 14 | 6 |
6.5%
|
|
| 15 | 1 |
1.1%
|
|
| 30 | 3 |
3.2%
|
|
| Sysmiss | 166 |