| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 0 | Less than one day | 0 |
0%
|
| 1 | 1 |
1.5%
|
|
| 2 | 4 |
6%
|
|
| 3 | 9 |
13.4%
|
|
| 4 | 7 |
10.4%
|
|
| 5 | 11 |
16.4%
|
|
| 6 | 2 |
3%
|
|
| 7 | 3 |
4.5%
|
|
| 8 | 1 |
1.5%
|
|
| 9 | 1 |
1.5%
|
|
| 10 | 6 |
9%
|
|
| 11 | 2 |
3%
|
|
| 12 | 2 |
3%
|
|
| 13 | 1 |
1.5%
|
|
| 14 | 3 |
4.5%
|
|
| 15 | 6 |
9%
|
|
| 17 | 3 |
4.5%
|
|
| 18 | 3 |
4.5%
|
|
| 20 | 1 |
1.5%
|
|
| 24 | 1 |
1.5%
|
|
| Sysmiss | 931 |