| Value | Category | 
|---|---|
| 10 | Blood taken | 
| 20 | Blood not taken | 
| 21 | Not present | 
| 22 | Refused | 
| 23 | Sample not tested/lost/damaged/insufficient | 
| 24 | " | 
| 25 | Not enough DBS to complete protocol | 
| 26 | Technical problems | 
| 27 | Other | 
| 97 | Information not collected (CS) | 
| 98 | Missing | 
| 99 | NIU (not in universe) | 
| var_concept.title | Vocabulary | 
|---|---|
| Female blood testing Variables -- TOPICS | IPUMS |