| Value |
Category |
| -3 |
Missing |
| 0 |
None |
| 1 |
1 Year |
| 2 |
2 Years |
| 3 |
3 Years |
| 4 |
4 Years |
| 5 |
5 Years |
| 6 |
6 Years |
| 7 |
7 Years |
| 8 |
8 Years |
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.