| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 15 minutes | 2992 |
21.4%
|
| 2 | Between 15 and 30 minutes | 3493 |
25%
|
| 3 | Between 31 and 60 minutes | 3070 |
21.9%
|
| 4 | More than 60 minutes | 4234 |
30.3%
|
| 99 | Don?t know | 205 |
1.5%
|