| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 1 |
3.4%
|
| -7 | Does not apply (spontaneous) | 1 |
3.4%
|
| 0 | Less than one day | 3 |
10.3%
|
| 1 | 2 |
6.9%
|
|
| 2 | 7 |
24.1%
|
|
| 3 | 1 |
3.4%
|
|
| 5 | 1 |
3.4%
|
|
| 6 | 1 |
3.4%
|
|
| 7 | 1 |
3.4%
|
|
| 10 | 2 |
6.9%
|
|
| 14 | 4 |
13.8%
|
|
| 15 | 1 |
3.4%
|
|
| 16 | 1 |
3.4%
|
|
| 20 | 1 |
3.4%
|
|
| 21 | 1 |
3.4%
|
|
| 30 | 1 |
3.4%
|
|
| Sysmiss | 282 |