| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 30 min | 4094 |
66.6%
|
| 2 | More than 30 min; less than an hour | 1570 |
25.5%
|
| 3 | More than an hour | 424 |
6.9%
|
| 4 | Don't know | 62 |
1%
|