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Frequency mother took tranquilizers during pregnancy

Codes and Frequencies

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For sample persons under 6 years old whose respondent is biological mother, PGMTRANQFREQ reports if, at any time during her pregnancy, the biological mother took tranquilizers. If the biological mother did take tranquilizers during pregnancy, the frequency with which she took tranquilizers is also reported, in several pre-specified intervals. Please see the Codes tab for detailed information on time intervals reported.

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


The 1981 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 age 6, whose respondent is biological mother.


  • 1981