| Value |
Category |
| 1 |
Less than 7 months |
| 2 |
7 - 12 months |
| 3 |
More than12 month |
| 4 |
Don"t know |
| 9 |
Not stated |
| 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.