| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 15 minutes | 4194 |
30%
|
| 2 | Between 15 and 30 minutes | 4899 |
35%
|
| 3 | Between 31 and 60 minutes | 3192 |
22.8%
|
| 4 | More than 60 minutes | 1547 |
11.1%
|
| 99 | Don?t know | 162 |
1.2%
|