| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 30 minutes | 679 |
36.5%
|
| 2 | Between 30 minutes and 1 hour | 557 |
30%
|
| 3 | 1 to 3 hours | 462 |
24.9%
|
| 4 | More than 3 hours | 100 |
5.4%
|
| 99 | Do not know | 60 |
3.2%
|
| Sysmiss | 5 |