| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 6 |
9.1%
|
| -7 | Does not apply (spontaneous) | 0 |
0%
|
| 0 | Less than one day | 0 |
0%
|
| 5 | 1 |
1.5%
|
|
| 7 | 5 |
7.6%
|
|
| 8 | 3 |
4.5%
|
|
| 10 | 2 |
3%
|
|
| 12 | 5 |
7.6%
|
|
| 15 | 7 |
10.6%
|
|
| 16 | 1 |
1.5%
|
|
| 18 | 2 |
3%
|
|
| 20 | 11 |
16.7%
|
|
| 21 | 1 |
1.5%
|
|
| 25 | 10 |
15.2%
|
|
| 26 | 2 |
3%
|
|
| 27 | 1 |
1.5%
|
|
| 28 | 4 |
6.1%
|
|
| 30 | 4 |
6.1%
|
|
| 33 | 1 |
1.5%
|
|
| Sysmiss | 1256 |