Value |
Category |
1 |
None |
2 |
1 yr |
3 |
2 yrs |
4 |
3 yrs |
5 |
4 yrs |
6 |
5 yrs |
7 |
6 yrs |
8 |
7 yrs and over |
9 |
Not stated |
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.