| Value | Category | Cases | |
|---|---|---|---|
| 1 | Less than an hour | 1396 |
17%
|
| 2 | Than an hour - less than an hour and a half | 438 |
5.3%
|
| 3 | Than an hour and a half - two hours | 90 |
1.1%
|
| 4 | More than two hours | 69 |
0.8%
|
| Sysmiss | 6196 |