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Age of biological mother when child born

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For sample persons under age 18 in 1988, and, in 1981, sample persons under age 18 whose biological mother is not in the household, MOMAGEATBORN reports how old the person's biological mother was when she/he was born.

This variable is part of the 1981 and 1988 Child Health Supplement. Please use the IPUMS NHIS drop-down menus and search function to find other variables related to this supplement.


The 1981 and 1988 Child Health Supplement collected information about children 17 years of age and younger on a wide range of topics, including: family structure, child care, breastfeeding, development, medications, birth and prenatal events, hospitalizations and surgery, chronic conditions, weight, school, behavior problems, social issues, and sleep habits. All questions were asked of the adult best able to provide accurate information about the child. The preferred respondents for this supplement, in order of priority, are: biological mother, biological father, an adoptive, step, or foster parent, a legal guardian, a primary caretaker, or another adult.


There are no comparability issues with this variable.


  • 1981: Sample persons under 18 whose biological mother was not in the household.
  • 1988: Sample persons under age 18.


  • 1981, 1988