| Value |
Category |
| 1 |
LESS THAN SIX MONTHS |
| 2 |
SIX TO 12 MONTHS |
| 3 |
BETWEEN ONE AND TWO YEARS |
| 4 |
MORE THAN TWO YEARS |
| 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.