Value |
Category |
0 |
None |
1 |
Incompl. Prim. |
2 |
Compl. Prim and Sec1 incompl. |
3 |
Compl. Sec1 and incompl. Sec2 |
4 |
Compl. Sec2 and Tert. |
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.