| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than an hour | 41 |
24.7%
|
| 2 | Between 1-2 hours | 85 |
51.2%
|
| 3 | Between 2-3 hours | 19 |
11.4%
|
| 4 | More than 3 hours | 21 |
12.7%
|
| Sysmiss | 305 |