| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than 30 min | 377 |
49.7%
|
| 2 | 30 to 60 min | 306 |
40.4%
|
| 3 | More than 1 hour | 75 |
9.9%
|
| Sysmiss | 1804 |