| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 16 |
21.9%
|
| -7 | Does not apply (spontaneous) | 2 |
2.7%
|
| 0 | Less than one day | 1 |
1.4%
|
| 1 | 3 |
4.1%
|
|
| 2 | 9 |
12.3%
|
|
| 3 | 12 |
16.4%
|
|
| 4 | 7 |
9.6%
|
|
| 5 | 12 |
16.4%
|
|
| 6 | 3 |
4.1%
|
|
| 7 | 2 |
2.7%
|
|
| 10 | 2 |
2.7%
|
|
| 11 | 1 |
1.4%
|
|
| 15 | 1 |
1.4%
|
|
| 20 | 1 |
1.4%
|
|
| 25 | 1 |
1.4%
|
|
| Sysmiss | 525 |