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Epidemiology and Genomics Research Program

Dietary Screener Questionnaire in the NHIS CCS 2015: Computed Variables

The computed diet variables for the National Health Interview Survey (NHIS) Cancer Control Supplement (CCS) 2015 DSQ are available for download as SAS transport and comma-separated values on NCI’s Short Dietary Assessment Instruments webpage.

  • Comma-separated Values (CSV) File - This zip file contains the comma-separated values file, which includes 14 variables, 33,672 records, and an additional record for the variable names.

  • SAS Transport File - The SAS transport file includes 33,672 records and 14 variables. To access the SAS dataset, unzip the file, then use proc cimport. For example:

    proc cimport file='nhis2015diet.01-23-2017.v9x' data=dietvars;
  • SAS Program - This is the SAS program that created the dataset. This is for reference, only; there should be no need to run this program.
  • Supplement SAS Files - This zip file contains 2 SAS data sets that are required to run the SAS program. The cereal data needed to create the fiber, calcium, sugar, and whole grain variables is not included due to privacy reasons.

The files include the following variables:

  • HHX - Household identifier
  • FMX - Family serial number
  • FPX - Person number (in family)
  • FCE - Predicted intake of fruits (cup equivalents) per day
  • VCE - Predicted intake of vegetables including legumes and French fries (cup equivalents) per day
  • VLNF - Predicted intake of vegetables including legumes and excluding French fries (cup equivalents) per day
  • FVCE - Predicted intake of fruits and vegetables including legumes and French fries (cup equivalents) per day
  • FVCENoFF - Predicted intake of fruits and vegetables including legumes and excluding French fries (cup equivalents) per day
  • Fiber - Predicted intake of fiber (gm) per day
  • Dairy - Predicted intake of dairy (cup equivalents) per day
  • Calcium - Predicted intake of calcium (mg) per day
  • Sugar - Predicted intake of added sugars from sugar-sweetened beverages (tsp equivalents) per day
  • SSB - Predicted intake of added sugars from sugar-sweetened beverages (tsp equivalents) per day
  • WHGrain- Predicted intake of whole grains (ounce equivalents) per day

The datasets are sorted in ascending order by the ID variables HHX, FMX, and FPX. All numeric variables have been rounded to the nearest 0.000001.

Last Updated: 14 Dec, 2021