| Value | Category | 
|---|---|
| 00 | Cannot read at all | 
| 10 | Reads | 
| 11 | Able to read only parts of sentence | 
| 12 | Able to read whole sentence | 
| 20 | Not ascertained (blind, different language) | 
| 21 | No card with required language | 
| 22 | Blind or visually impaired | 
| 98 | Missing | 
| 99 | NIU (not in universe) | 
| var_concept.title | Vocabulary | 
|---|---|
| Education Variables -- TOPICS | IPUMS |