| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 15 minutes before | 3 |
11.1%
|
| 2 | Less than an hour before | 2 |
7.4%
|
| 3 | 12 hours before | 2 |
7.4%
|
| 4 | 24 hours before | 9 |
33.3%
|
| 5 | 48 hours before | 3 |
11.1%
|
| 6 | More than 48 hours before | 8 |
29.6%
|
| Sysmiss | 979 |