| Value | Category | Cases | |
|---|---|---|---|
| 1 | 30 minutes | 2718 |
80.1%
|
| 2 | 30-60 minutes | 251 |
7.4%
|
| 3 | 24 hours | 306 |
9%
|
| 4 | More than 24 hours | 113 |
3.3%
|
| 8 | Don't remember | 5 |
0.1%
|
| Sysmiss | 961 |