| Value | Category | Cases | |
|---|---|---|---|
| 1 | 15-30 minutes | 50 |
26.5%
|
| 2 | 30-45 minutes | 19 |
10.1%
|
| 3 | 45-60 minutes | 25 |
13.2%
|
| 4 | Don't know | 14 |
7.4%
|
| 5 | Less than 15 minutes | 49 |
25.9%
|
| 6 | More than one hour | 32 |
16.9%
|
| Missing value | 4 |