| Value |
Category |
| 1 |
up to 30 min |
| 2 |
from 31 min. Up to 1 hour |
| 3 |
over 1 hour. Up to 2 hours |
| 4 |
over 2 hours |
| Sysmiss |
|
Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.