| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 15 minutes | 1093 |
7.8%
|
| 2 | Between 15 and 30 minutes | 2326 |
16.6%
|
| 3 | Between 31 and 60 minutes | 2850 |
20.4%
|
| 4 | More than 60 minutes | 5714 |
40.8%
|
| 99 | Don?t know | 2011 |
14.4%
|