| Value | Category | Cases | |
|---|---|---|---|
| 1 | less than 5 min | 324 |
66.1%
|
| 2 | 6-15 min | 86 |
17.6%
|
| 3 | 16-30 min | 40 |
8.2%
|
| 4 | 31-60 min | 18 |
3.7%
|
| 5 | more than 1 hour | 22 |
4.5%
|
| Sysmiss | 1292 |