| Value | Category | Cases | |
|---|---|---|---|
| 1 | 15-30 minutes | 195 |
29.5%
|
| 2 | 30-45 minutes | 34 |
5.2%
|
| 3 | 45-60 minutes | 47 |
7.1%
|
| 4 | Don't know | 2 |
0.3%
|
| 5 | Less than 15 minutes | 357 |
54.1%
|
| 6 | More than one hour | 25 |
3.8%
|