| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 4 |
5.9%
|
| 1 | Less than one day | 1 |
1.5%
|
| 15 | 2 |
2.9%
|
|
| 25 | 1 |
1.5%
|
|
| 30 | 26 |
38.2%
|
|
| 45 | 8 |
11.8%
|
|
| 50 | 2 |
2.9%
|
|
| 60 | 14 |
20.6%
|
|
| 90 | 8 |
11.8%
|
|
| 120 | 1 |
1.5%
|
|
| 364 | 1 |
1.5%
|
|
| Sysmiss | 289 |