| Value |
Category |
| -3 |
illegal missing |
| -2 |
dont know |
| -1 |
refuse |
| 1 |
0-10 days |
| 2 |
11-20 days |
| 3 |
20-31 days |
| 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.