| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 6 |
5.7%
|
| -7 | Does not apply (spontaneous) | 0 |
0%
|
| 0 | Less than one day | 15 |
14.3%
|
| 1 | 16 |
15.2%
|
|
| 2 | 24 |
22.9%
|
|
| 3 | 14 |
13.3%
|
|
| 4 | 8 |
7.6%
|
|
| 5 | 7 |
6.7%
|
|
| 7 | 3 |
2.9%
|
|
| 8 | 5 |
4.8%
|
|
| 10 | 1 |
1%
|
|
| 14 | 1 |
1%
|
|
| 15 | 2 |
1.9%
|
|
| 20 | 1 |
1%
|
|
| 25 | 1 |
1%
|
|
| 28 | 1 |
1%
|
|
| Sysmiss | 624 |