| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 8 |
10.5%
|
| 1 | Less than one day | 3 |
3.9%
|
| 5 | 1 |
1.3%
|
|
| 10 | 1 |
1.3%
|
|
| 15 | 4 |
5.3%
|
|
| 20 | 5 |
6.6%
|
|
| 21 | 3 |
3.9%
|
|
| 25 | 1 |
1.3%
|
|
| 28 | 1 |
1.3%
|
|
| 30 | 28 |
36.8%
|
|
| 31 | 1 |
1.3%
|
|
| 35 | 1 |
1.3%
|
|
| 60 | 11 |
14.5%
|
|
| 70 | 2 |
2.6%
|
|
| 90 | 3 |
3.9%
|
|
| 120 | 1 |
1.3%
|
|
| 150 | 1 |
1.3%
|
|
| 360 | 1 |
1.3%
|
|
| Sysmiss | 398 |