| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 15 minutes | 1430 |
10.2%
|
| 2 | Between 15 and 30 minutes | 2742 |
19.6%
|
| 3 | Between 31 and 60 minutes | 3436 |
24.6%
|
| 4 | More than 60 minutes | 4363 |
31.2%
|
| 99 | Don?t know | 2023 |
14.5%
|