The primary purpose of this Phase II project is to further develop and evaluate a computer-based Food Portion Tutorial to improve food portion estimation among a variety of food types.
Specific aims of the project are to revamp the Computerized Food Portion Tutorial (CFPT) developed in Phase I as per feedback from nutritionists and end-users, expand the database of pictures, integrate portion sizes with nutritional information and provide dietary data tailored to the end-user, link the database of CFPT pictures with a validated food frequency questionnaire to develop a Pictorial Food Frequency Questionnaire (PFFQ) module, and offer the CFPT in a CD-rom version for expanded accessibility. Usability evaluations of both the Computerized Food Portion Tutorial and the Pictorial Food Frequency Questionnaire with dietary professionals will be conducted to ensure accuracy and appropriateness of program content and design. The finalized tutorial module will be evaluated in an efficacy trial to determine whether exposure to the tutorial assists users by improving food portion estimation accuracy. A validity trial of the Pictorial Food Frequency Questionnaire (PFFQ) component will also be conducted, comparing the PFFQ with a standard food frequency questionnaire, a 4-day food record, and multiple 24-hour recalls. Based on results as well as feedback from both end users and nutritionists, proposed modifications will be developed for a Phase III commercial product.

Agency
National Institute of Health (NIH)
Institute
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
Type
Small Business Innovation Research Grants (SBIR) - Phase II (R44)
Project #
2R44DK061079-02
Application #
6693737
Study Section
Special Emphasis Panel (ZRG1-SSS-D (10))
Program Officer
Densmore, Christine L
Project Start
2002-04-15
Project End
2005-08-31
Budget Start
2003-09-01
Budget End
2004-08-31
Support Year
2
Fiscal Year
2003
Total Cost
$384,083
Indirect Cost
Name
Personal Improvement Computer Systems
Department
Type
DUNS #
861143386
City
Reston
State
VA
Country
United States
Zip Code
Beasley, Jeannette M; Davis, Amanda; Riley, William T (2009) Evaluation of a web-based, pictorial diet history questionnaire. Public Health Nutr 12:651-9