| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 23 |
23.2%
|
| 0 | Less than one day | 24 |
24.2%
|
| 1 | 17 |
17.2%
|
|
| 2 | 15 |
15.2%
|
|
| 3 | 6 |
6.1%
|
|
| 4 | 3 |
3%
|
|
| 5 | 2 |
2%
|
|
| 6 | 1 |
1%
|
|
| 7 | 1 |
1%
|
|
| 10 | 1 |
1%
|
|
| 14 | 2 |
2%
|
|
| 28 | 1 |
1%
|
|
| 30 | 1 |
1%
|
|
| 60 | 1 |
1%
|
|
| 90 | 1 |
1%
|
|
| Sysmiss | 169 |