| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 5 minutes | 3529 |
23.9%
|
| 2 | 5 - 15 minutes | 5369 |
36.3%
|
| 3 | 15 - 30 minutes | 3149 |
21.3%
|
| 4 | Over 30 minutes | 2303 |
15.6%
|
| 5 | Don't know | 433 |
2.9%
|
| Sysmiss | 2201 |