| Value |
Category |
| 1 |
Less than 2 years |
| 2 |
2 to 5 years |
| 3 |
6 to 10 years |
| 4 |
More than 10 years |
| 98 |
Don’t know |
| 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.