| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 11 |
13.9%
|
| -7 | Does not apply (spontaneous) | 2 |
2.5%
|
| 0 | Less than one day | 19 |
24.1%
|
| 1 | 11 |
13.9%
|
|
| 2 | 13 |
16.5%
|
|
| 3 | 8 |
10.1%
|
|
| 4 | 2 |
2.5%
|
|
| 5 | 3 |
3.8%
|
|
| 6 | 1 |
1.3%
|
|
| 7 | 4 |
5.1%
|
|
| 10 | 1 |
1.3%
|
|
| 14 | 1 |
1.3%
|
|
| 45 | 1 |
1.3%
|
|
| 56 | 1 |
1.3%
|
|
| 60 | 1 |
1.3%
|
|
| Sysmiss | 530 |