| Value |
Category |
| 1 |
Convenience in work |
| 2 |
Studying, training |
| 3 |
housekeeping |
| 4 |
Old, ill |
| 5 |
Others |
| 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.