| Value |
Category |
| 1 |
Up to six months ago |
| 2 |
Over 6 months ago but up to one year ago |
| 3 |
Over a year ago, but less than 2 years ago |
| 4 |
2 years or more ago but less than 5 years ago |
| 5 |
5 years ago or more |
| 6 |
Do not know/Can not remember |
| 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.
