| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 13 |
6.7%
|
| 0 | Less than one day | 34 |
17.4%
|
| 1 | 25 |
12.8%
|
|
| 2 | 7 |
3.6%
|
|
| 3 | 26 |
13.3%
|
|
| 4 | 10 |
5.1%
|
|
| 5 | 23 |
11.8%
|
|
| 6 | 7 |
3.6%
|
|
| 7 | 7 |
3.6%
|
|
| 8 | 4 |
2.1%
|
|
| 9 | 1 |
0.5%
|
|
| 10 | 4 |
2.1%
|
|
| 11 | 1 |
0.5%
|
|
| 14 | 4 |
2.1%
|
|
| 15 | 8 |
4.1%
|
|
| 16 | 1 |
0.5%
|
|
| 20 | 3 |
1.5%
|
|
| 21 | 2 |
1%
|
|
| 25 | 2 |
1%
|
|
| 30 | 3 |
1.5%
|
|
| 35 | 2 |
1%
|
|
| 40 | 1 |
0.5%
|
|
| 48 | 1 |
0.5%
|
|
| 50 | 2 |
1%
|
|
| 60 | 2 |
1%
|
|
| 75 | 1 |
0.5%
|
|
| 80 | 1 |
0.5%
|
|
| Sysmiss | 812 |