| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 1 |
0.9%
|
| -7 | Does not apply (spontaneous) | 17 |
15.9%
|
| 0 | Less than one day | 22 |
20.6%
|
| 1 | 17 |
15.9%
|
|
| 2 | 20 |
18.7%
|
|
| 3 | 11 |
10.3%
|
|
| 4 | 1 |
0.9%
|
|
| 7 | 6 |
5.6%
|
|
| 10 | 5 |
4.7%
|
|
| 14 | 3 |
2.8%
|
|
| 28 | 2 |
1.9%
|
|
| 60 | 1 |
0.9%
|
|
| 90 | 1 |
0.9%
|
|
| Sysmiss | 198 |