| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 6 |
7.1%
|
| 0 | Less than one day | 16 |
18.8%
|
| 1 | 12 |
14.1%
|
|
| 2 | 22 |
25.9%
|
|
| 3 | 9 |
10.6%
|
|
| 4 | 1 |
1.2%
|
|
| 5 | 1 |
1.2%
|
|
| 7 | 6 |
7.1%
|
|
| 10 | 3 |
3.5%
|
|
| 12 | 2 |
2.4%
|
|
| 15 | 2 |
2.4%
|
|
| 28 | 1 |
1.2%
|
|
| 30 | 1 |
1.2%
|
|
| 38 | 1 |
1.2%
|
|
| 67 | 1 |
1.2%
|
|
| 94 | 1 |
1.2%
|
|
| Sysmiss | 207 |