| Value | Category | 
|---|---|
| 0 | No stepmother present | 
| 1 | Improbable age difference | 
| 2 | Spouse of father | 
| 3 | No surviving children | 
| 4 | Number of children born/children surviving check | 
| var_concept.title | Vocabulary | 
|---|---|
| Constructed Family Interrelationship Variables -- PERSON | IPUMS |