| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 0 | Less than one day | 0 |
0%
|
| 7 | 1 |
2.5%
|
|
| 10 | 3 |
7.5%
|
|
| 12 | 1 |
2.5%
|
|
| 15 | 6 |
15%
|
|
| 20 | 4 |
10%
|
|
| 22 | 2 |
5%
|
|
| 25 | 7 |
17.5%
|
|
| 28 | 1 |
2.5%
|
|
| 30 | 3 |
7.5%
|
|
| 32 | 4 |
10%
|
|
| 35 | 5 |
12.5%
|
|
| 36 | 1 |
2.5%
|
|
| 40 | 1 |
2.5%
|
|
| 45 | 1 |
2.5%
|
|
| Sysmiss | 1282 |