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Frequency used vitamins and minerals, past 3 months

Codes and Frequencies

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For sample persons under age 18 who took vitamins or minerals in the past 2 weeks (MVIT2W), MVIT2WFREQ reports the frequency the person took or used the medication during the past 3 months. MVIT2WFREQ is part of the "Medicine Use" section of the 1981 Child Health Supplement.

Related Variables about Vitamin or Mineral Use 

For those who respond "yes" to MVIT2W, the following information is also collected:

  • The main health problem the respondent used the vitamin or mineral for (MVIT2WPROB),
  • Whether the respondent obtained the vitamin or mineral via prescription (MVIT2WRX), and
  • Whether a doctor recommended the use of the vitamin or mineral (MVIT2WDREC)

For a complete list of the medicines asked about in the Medicine Use section, please see MALL2W.


There are no comparability issues.


  • 1981: Sample persons under age 18 who took vitamins or minerals in past two weeks (MVIT2W).


  • 1981