| Value |
Category |
| 1 |
Less than month |
| 2 |
1 to 4 months |
| 3 |
4 to 6 months |
| 4 |
6 to 12 months |
| 5 |
12 months and 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.