| Value |
Category |
| -9 |
don't know |
| -8 |
refusal |
| -7 |
does not apply |
| 1 |
less than 1 year |
| 7 |
|
| 10 |
|
| 12 |
|
| 19 |
|
| 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.