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.