| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 10 minutes | 3339 |
19.3%
|
| 2 | 10 - 20 minutes | 3974 |
22.9%
|
| 3 | 21 - 30 minutes | 3333 |
19.2%
|
| 4 | More than 30 minutes | 6686 |
38.5%
|
| 9 | Missing value | 13 |
0.1%
|