Only participants’ that had reported taking a dietary supplement or an antacid are included in these files. The Individual Dietary Supplements File includes one record for each dietary supplement or antacid consumed by a survey participant.

The names for the variables included in this file are listed in Appendix 1. Individual Dietary Supplements File (DSQIDS_H): Contains detailed information about the types and amounts of individual DS and antacids reported by each participant. The NHANES-DSD release consists of three datasets which contain information on products Dietary Supplement Product Information (DSPI), Dietary Supplement Ingredient Information (DSII), and Dietary Supplement Blend Information (DSBI).ģ0-Day Dietary Supplements Data Files: Two data files were produced from the 30-day dietary supplement and non-prescription antacid sub-sections of the DSQ interview: Total Dietary Supplements file and Individual Dietary Supplements file.

The NHANES-DSD contains detailed information on the DS and non-prescription antacids containing calcium and/or magnesium (antacids) reported by survey participants since NHANES 1999. The DS reported in the NHANES 2013-2014 are detailed in the NHANES Dietary Supplement Database (NHANES-DSD) 1999-2014. Non-prescription antacids, which contained calcium and/or magnesium (antacids), are also included in these data files. Analysts are encouraged to read the documentation in order to understand the names and structure of the files as well as the variables. The NHANES 2013–2014 dietary supplement questions are similar to the NHANES 1999–2012 and NHANES III 1988–1994 questions, although, there have been additional questions added over the cycles. The dietary supplement sub-section collects personal interview data on use of DS during the 30-day period prior to the survey date.

The Dietary Supplement and Prescription Medication Section (DSQ) of the Sample Person (SP) Questionnaire, collects information on 1) prescription and non-prescription dietary supplements (DS), 2) non-prescription antacids, 3) prescription medications, and 4) asthma medication.

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