| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than an hour | 7926 |
77.3%
|
| 2 | Half an hour to 1 hour | 1653 |
16.1%
|
| 3 | 1 hour or more | 674 |
6.6%
|
| Sysmiss | 28680 |