| Value |
Category |
| 1 |
Less than 3 months |
| 2 |
3 to less than 6 months |
| 3 |
6 to less than 12 months |
| 4 |
12 months or more |
| 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.