| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 1 |
3.3%
|
| 0 | Less than one day | 5 |
16.7%
|
| 1 | 5 |
16.7%
|
|
| 3 | 3 |
10%
|
|
| 4 | 1 |
3.3%
|
|
| 5 | 3 |
10%
|
|
| 7 | 4 |
13.3%
|
|
| 14 | 1 |
3.3%
|
|
| 15 | 3 |
10%
|
|
| 30 | 2 |
6.7%
|
|
| 45 | 1 |
3.3%
|
|
| 90 | 1 |
3.3%
|
|
| Sysmiss | 699 |