| Value |
Category |
| 0 |
nil |
| 9 |
|
| 10 |
|
| 13 |
|
| 15 |
|
| 18 |
|
| 20 |
|
| 23 |
|
| 60 |
|
| 70 |
|
| 80 |
|
| 83 |
|
| 99 |
don't know |
| 195 |
|
| 999 |
not applicable |
| 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.