Hi all - I’m using the ACS 2018 5-year sample to parse out some different living arrangements for children, and have come up against a question I’m not sure how to answer.
Using the detailed relationship to householder measure (related), I calculated the number of people in the household who are identified as the householder’s parents (related==501; by year and serial). I expected this new household-level measure to have values of 0, 1, or 2. However, for a very small number of cases (~200), there are 3 or 4 parents of the householder present. Using momloc, momloc2, poploc, and poploc2, I can see that no more than two “parents” per household are actually linked to the householder (sometimes fewer). So who might these third and fourth parents be? Demographics make them look feasibly parental, but if they were step-parents, they would have been identified through the mom/pop pointer variables. If they were parents-in-law mistakenly coded on relate, they would have momloc/poploc values pointing to the householder’s spouse, where present. Any other thoughts on a relationship I might be overlooking?