| Value |
Category |
| 1 |
Within 1 year |
| 2 |
1 year |
| 3 |
2 years |
| 4 |
3 years |
| 5 |
4+ years |
| 8 |
Don't know |
| 9 |
Missing |
| 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.