| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| 1 | Less than one day | 0 |
0%
|
| 6 | 1 |
4%
|
|
| 20 | 1 |
4%
|
|
| 25 | 1 |
4%
|
|
| 30 | 3 |
12%
|
|
| 31 | 1 |
4%
|
|
| 45 | 1 |
4%
|
|
| 60 | 1 |
4%
|
|
| 90 | 8 |
32%
|
|
| 120 | 1 |
4%
|
|
| 150 | 1 |
4%
|
|
| 180 | 3 |
12%
|
|
| 240 | 1 |
4%
|
|
| 301 | 1 |
4%
|
|
| 1095 | 1 |
4%
|
|
| Sysmiss | 125 |