| Value |
Category |
| -9 |
refused to answer |
| -8 |
don't know |
| 1 |
less than 1 year ago |
| 2 |
about 1 year ago |
| 3 |
2 years ago |
| 4 |
3-5 years ago |
| 5 |
more than 5 years ago |
| 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.