| Value | Category | Cases | |
|---|---|---|---|
| 1 | it lasted less than 10 minutes | 204 |
25.2%
|
| 2 | it lasted between 10 and 30 minutes | 411 |
50.8%
|
| 3 | it lasted more than 30 minutes | 194 |
24%
|
| Sysmiss | 1846 |