| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 2 |
5.6%
|
| 1 | Less than one day | 1 |
2.8%
|
| 5 | 1 |
2.8%
|
|
| 14 | 1 |
2.8%
|
|
| 15 | 1 |
2.8%
|
|
| 20 | 1 |
2.8%
|
|
| 28 | 1 |
2.8%
|
|
| 30 | 12 |
33.3%
|
|
| 40 | 1 |
2.8%
|
|
| 45 | 1 |
2.8%
|
|
| 50 | 2 |
5.6%
|
|
| 60 | 7 |
19.4%
|
|
| 80 | 1 |
2.8%
|
|
| 90 | 2 |
5.6%
|
|
| 120 | 1 |
2.8%
|
|
| 180 | 1 |
2.8%
|
|
| Sysmiss | 256 |