| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 30 minutes | 532 |
28.6%
|
| 2 | Between 30 minutes and 1 hour | 620 |
33.4%
|
| 3 | 1 to 3 hours | 543 |
29.2%
|
| 4 | More than 3 hours | 108 |
5.8%
|
| 99 | Do not know | 55 |
3%
|
| Sysmiss | 5 |