| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 10 |
8.6%
|
| -7 | Does not apply (spontaneous) | 25 |
21.6%
|
| 0 | Less than one day | 39 |
33.6%
|
| 1 | 9 |
7.8%
|
|
| 2 | 4 |
3.4%
|
|
| 3 | 10 |
8.6%
|
|
| 4 | 3 |
2.6%
|
|
| 5 | 4 |
3.4%
|
|
| 6 | 1 |
0.9%
|
|
| 7 | 4 |
3.4%
|
|
| 10 | 2 |
1.7%
|
|
| 15 | 2 |
1.7%
|
|
| 21 | 2 |
1.7%
|
|
| 60 | 1 |
0.9%
|
|
| Sysmiss | 235 |