| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 5 |
8.2%
|
| -7 | Does not apply (spontaneous) | 1 |
1.6%
|
| 0 | Less than one day | 13 |
21.3%
|
| 1 | 9 |
14.8%
|
|
| 2 | 9 |
14.8%
|
|
| 3 | 12 |
19.7%
|
|
| 4 | 1 |
1.6%
|
|
| 5 | 1 |
1.6%
|
|
| 7 | 4 |
6.6%
|
|
| 10 | 1 |
1.6%
|
|
| 12 | 1 |
1.6%
|
|
| 15 | 1 |
1.6%
|
|
| 20 | 1 |
1.6%
|
|
| 30 | 1 |
1.6%
|
|
| 60 | 1 |
1.6%
|
|
| Sysmiss | 307 |