| Value |
Category |
| 1 |
Month |
| 2 |
Unity |
| 3 |
Travel ticket |
| 4 |
Phone call |
| 5 |
Entry ticket |
| 6 |
Time |
| 7 |
Packet |
| 8 |
Other |
| 9 |
No response |
| 10 |
Not-applicable |
| 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.