| Value |
Category |
| 1 |
None |
| 2 |
Less than 1 year |
| 3 |
1-2 years |
| 4 |
3-5 years |
| 5 |
6-10 years |
| 6 |
More than 10 years |
| 9 |
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.
