| Value | Category | Cases | |
|---|---|---|---|
| 1 | less than 5 minutes | 361 |
20.1%
|
| 2 | 6-15 minutes | 317 |
17.6%
|
| 3 | 16-30 minutes | 151 |
8.4%
|
| 4 | 31-60 minutes | 69 |
3.8%
|
| 5 | more than 1 hour | 59 |
3.3%
|
| 7 | don't know | 840 |
46.7%
|