| Value |
Category |
| 1 |
more than 30 minutes |
| 2 |
v.r.: exactly 30 minutes |
| 3 |
less than 30 minutes |
| 98 |
don't know |
| Missing value |
|
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.
