| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 15 minutes before | 0 |
0%
|
| 2 | Less than an hour before | 0 |
0%
|
| 3 | 12 hours before | 2 |
20%
|
| 4 | 24 hours before | 2 |
20%
|
| 5 | 48 hours before | 2 |
20%
|
| 6 | More than 48 hours before | 4 |
40%
|
| Sysmiss | 996 |