Value |
Category |
1 |
less than 30 minutes |
2 |
30-60 minutes |
3 |
1-2 hours |
4 |
2-3 hours |
5 |
more than 3 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.