| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 6 |
25%
|
| 1 | Less than one day | 1 |
4.2%
|
| 5 | 4 |
16.7%
|
|
| 7 | 2 |
8.3%
|
|
| 15 | 2 |
8.3%
|
|
| 16 | 1 |
4.2%
|
|
| 20 | 1 |
4.2%
|
|
| 24 | 1 |
4.2%
|
|
| 30 | 1 |
4.2%
|
|
| 60 | 1 |
4.2%
|
|
| 72 | 1 |
4.2%
|
|
| 90 | 1 |
4.2%
|
|
| 200 | 1 |
4.2%
|
|
| 300 | 1 |
4.2%
|
|
| Sysmiss | 127 |