| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 2 |
2.6%
|
| -7 | Does not apply (spontaneous) | 22 |
28.9%
|
| 0 | Less than one day | 6 |
7.9%
|
| 1 | 9 |
11.8%
|
|
| 2 | 7 |
9.2%
|
|
| 3 | 9 |
11.8%
|
|
| 4 | 6 |
7.9%
|
|
| 5 | 3 |
3.9%
|
|
| 7 | 7 |
9.2%
|
|
| 9 | 1 |
1.3%
|
|
| 10 | 1 |
1.3%
|
|
| 15 | 1 |
1.3%
|
|
| 30 | 1 |
1.3%
|
|
| 60 | 1 |
1.3%
|
|
| Sysmiss | 183 |