| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 30 minutes | 615 |
33.1%
|
| 2 | Between 30 minutes and 1 hour | 644 |
34.7%
|
| 3 | 1 to 3 hours | 455 |
24.5%
|
| 4 | More than 3 hours | 75 |
4%
|
| 99 | Do not know | 69 |
3.7%
|
| Sysmiss | 5 |