| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 2 |
1.5%
|
| 0 | Less than one day | 6 |
4.4%
|
| 1 | 13 |
9.5%
|
|
| 2 | 22 |
16.1%
|
|
| 3 | 15 |
10.9%
|
|
| 4 | 18 |
13.1%
|
|
| 5 | 12 |
8.8%
|
|
| 6 | 5 |
3.6%
|
|
| 7 | 10 |
7.3%
|
|
| 8 | 8 |
5.8%
|
|
| 9 | 3 |
2.2%
|
|
| 10 | 6 |
4.4%
|
|
| 12 | 2 |
1.5%
|
|
| 15 | 5 |
3.6%
|
|
| 18 | 1 |
0.7%
|
|
| 25 | 2 |
1.5%
|
|
| 27 | 2 |
1.5%
|
|
| 30 | 2 |
1.5%
|
|
| 38 | 1 |
0.7%
|
|
| 60 | 1 |
0.7%
|
|
| 90 | 1 |
0.7%
|
|
| Sysmiss | 461 |