| Value | Category | Cases | |
|---|---|---|---|
| 2 | 0 - 15 minutes | 1833 |
70.9%
|
| 3 | 16 - 29 minutes | 304 |
11.8%
|
| 4 | 30 - 59 minutes | 138 |
5.3%
|
| 5 | 60 minutes or more | 75 |
2.9%
|
| 6 | don't know | 234 |
9.1%
|
| Sysmiss | 32 |