ID_FAM: Unique family number within file
Unique identifier within each file that groups observations by family/household. Since card numbers were (often) similar - i.e. in a series - for all family members living in the same dwelling unit, by drawing on these numbers, as well as last names, address, ages and parents' place of birth it was often possible to infer family ties. In the case that multiple families lived in the same dwelling, almost always, the different families could be separated since husbands were often listed first, followed respectively by wife and children. In a number of instances, children appeared in the census rolls separated from their parents; in such instances, it was not always possible to reconstruct the family ties. This would often arise if the child was orphaned and living in either an institutional or other setting. In the cities, orphans were generally noted as such. But in instances, for example, where a child was living with a maternal grandmother, because cards were alphabetically arranged, it was not generally possible to infer a definitive family tie, and thus none is indicated.
Based upon 56,571 valid cases out of 56,571 total cases.
- mean: 91.07
- minimum: 1
- maximum: 271
- standard deviation: 54.81
Location: 15-17 (width: 3; decimal: 0)
Variable Type: numeric
Source: This variable was taken from: The 1915 Iowa State Census Project.
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