| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 1 |
2.2%
|
| 1 | Less than one day | 0 |
0%
|
| 7 | 1 |
2.2%
|
|
| 16 | 1 |
2.2%
|
|
| 21 | 1 |
2.2%
|
|
| 30 | 12 |
26.1%
|
|
| 42 | 3 |
6.5%
|
|
| 45 | 1 |
2.2%
|
|
| 60 | 4 |
8.7%
|
|
| 90 | 8 |
17.4%
|
|
| 120 | 4 |
8.7%
|
|
| 150 | 1 |
2.2%
|
|
| 180 | 8 |
17.4%
|
|
| 240 | 1 |
2.2%
|
|
| Sysmiss | 107 |