| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1. Less than one hour | 551 |
92.1%
|
| 2 | 2. Between 1 and 23 hours | 18 |
3%
|
| 3 | 3. More than 24 hours | 29 |
4.8%
|
| 8 | 8. Don't know | 0 |
0%
|
| Sysmiss | 1512 |