| Value |
Category |
| 1 |
1 - 2 years ago |
| 2 |
2 - 3 years ago |
| 3 |
3 - 4 years ago |
| 4 |
more than 4 years ago |
| 5 |
within past 12 months |
| 88 |
don’t know |
| 99 |
refused |
| 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.