| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 1 |
2.9%
|
| 0 | Less than one day | 1 |
2.9%
|
| 3 | 1 |
2.9%
|
|
| 5 | 1 |
2.9%
|
|
| 7 | 2 |
5.9%
|
|
| 8 | 1 |
2.9%
|
|
| 12 | 1 |
2.9%
|
|
| 14 | 19 |
55.9%
|
|
| 18 | 1 |
2.9%
|
|
| 22 | 1 |
2.9%
|
|
| 25 | 1 |
2.9%
|
|
| 35 | 1 |
2.9%
|
|
| 40 | 2 |
5.9%
|
|
| 45 | 1 |
2.9%
|
|
| Sysmiss | 354 |