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Diet History Questionnaire II: Diet*Calc Software
Diet*Calc version 1.5.1 was released in October
2012. A revision history describing changes made for this release is provided in
readme.txt.
Diet*Calc is PC software that can be used to analyze Diet History
Questionnaire II (DHQ) data (see Steps for Using the
DHQ). Diet*Calc generates nutrient and food group intake estimates for the
standard versions of the DHQ II distributed by the NCI, as well as modified
versions of the DHQ. The software consists of three main components:
- The Diet*Calc Analysis generates nutrient estimates based on the food
frequency data collected on the DHQ forms. The DHQ data must be coded and stored
in an ASCII text file. Typically, this text file is created by scanning paper
forms, but other methods can be used (see Questionnaire
Forms).
- The Data Dictionary Editor is accessed through the Edit menu of the
Diet*Calc Analysis program. Diet*Calc interprets DHQ data files using
information stored in Questionnaire Data
Dictionary files (*.qdd). These dictionary files contain the column
locations and coding information for the variables in a questionnaire data file.
You must edit the data dictionary when analyzing a modified version of the
DHQ.
- The Database Utility, a separate program installed with the Diet*Calc
software, allows you to import nutrient data into the Diet*Calc food database.
The Database Utility converts nutrient values expressed as nutrient per 100
grams into the nutrient per serving size format required by Diet*Calc.
Download the Diet*Calc software to analyze the
DHQ II or to verify that Diet*Calc can analyze a modified version of the
questionnaire.
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