| Value |
Category |
| 1 |
less than one month |
| 2 |
1-3 months |
| 3 |
4-6 months |
| 4 |
7-12 months |
| 5 |
13-18 months |
| 6 |
19-24 months |
| 7 |
25-36 months |
| 8 |
more than 36 months |
| 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.