| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 14 |
10.6%
|
| 0 | Less than one day | 24 |
18.2%
|
| 1 | 8 |
6.1%
|
|
| 2 | 12 |
9.1%
|
|
| 3 | 6 |
4.5%
|
|
| 4 | 1 |
0.8%
|
|
| 5 | 5 |
3.8%
|
|
| 6 | 4 |
3%
|
|
| 7 | 11 |
8.3%
|
|
| 8 | 3 |
2.3%
|
|
| 9 | 2 |
1.5%
|
|
| 10 | 6 |
4.5%
|
|
| 11 | 2 |
1.5%
|
|
| 12 | 1 |
0.8%
|
|
| 14 | 10 |
7.6%
|
|
| 15 | 1 |
0.8%
|
|
| 16 | 3 |
2.3%
|
|
| 18 | 1 |
0.8%
|
|
| 19 | 1 |
0.8%
|
|
| 20 | 2 |
1.5%
|
|
| 21 | 1 |
0.8%
|
|
| 22 | 1 |
0.8%
|
|
| 24 | 1 |
0.8%
|
|
| 25 | 1 |
0.8%
|
|
| 30 | 10 |
7.6%
|
|
| 90 | 1 |
0.8%
|
|
| Sysmiss | 1593 |