| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 30 minutes | 689 |
37.1%
|
| 2 | Between 30 minutes and 1 hour | 598 |
32.2%
|
| 3 | 1 to 3 hours | 469 |
25.2%
|
| 4 | More than 3 hours | 73 |
3.9%
|
| 99 | Do not know | 29 |
1.6%
|
| Sysmiss | 5 |