| Value | Category | Cases | |
|---|---|---|---|
| 1 | 15-30 minutes | 257 |
42.2%
|
| 2 | 30-45 minutes | 69 |
11.3%
|
| 3 | 45-60 minutes | 57 |
9.4%
|
| 4 | Don't know | 5 |
0.8%
|
| 5 | Less than 15 minutes | 200 |
32.8%
|
| 6 | more than one hour. | 21 |
3.4%
|