| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 25 |
28.1%
|
| 0 | Less than one day | 4 |
4.5%
|
| 1 | 3 |
3.4%
|
|
| 2 | 9 |
10.1%
|
|
| 3 | 7 |
7.9%
|
|
| 5 | 2 |
2.2%
|
|
| 6 | 1 |
1.1%
|
|
| 7 | 4 |
4.5%
|
|
| 8 | 3 |
3.4%
|
|
| 10 | 4 |
4.5%
|
|
| 12 | 2 |
2.2%
|
|
| 13 | 2 |
2.2%
|
|
| 14 | 2 |
2.2%
|
|
| 20 | 2 |
2.2%
|
|
| 25 | 4 |
4.5%
|
|
| 26 | 1 |
1.1%
|
|
| 28 | 2 |
2.2%
|
|
| 30 | 11 |
12.4%
|
|
| 60 | 1 |
1.1%
|
|
| Sysmiss | 509 |