NCT03661931

Dietary Quality Photo Navigation (DQPN) Preliminary Validation Study

Dietary Quality Photo Navigation: A Preliminary Biomarker Validation Study and Comparison With a Food Frequency Questionnaire

• Status: Unknown
• Phase: N/A
• Study type: Interventional
• Enrollment: 150 (estimated)
• Sponsor: Boston Heart Diagnostics · Industry
• Sex: All
• Age: 18 Years
• Healthy volunteers: Accepted

Summary

The purpose of this research project is to conduct a preliminary validation study of the Diet Quality Photo Navigation (DQPN) method of dietary intake assessment. In 150 adults, dietary intake as estimated by the DQPN will be compared to dietary intake as estimated by a food frequency questionnaire (FFQ) and with blood levels of fatty acids, folic acid, and beta-carotene as biomarkers of dietary intake.

Detailed description

The primary aim is to test thee principal hypotheses (n=150): 1. There will be statistically significant correlations between blood levels of fatty acids/folate/beta-carotene and their corresponding levels of dietary intake as estimated by the DQPN. 2. There will be statistically significant correlations between the DQPN and FFQ methods of dietary intake assessment. This includes individual dietary components as well as overall dietary quality and disease risk assessments. 3. User experience surveys will demonstrate that the DQPN can be completed more quickly and more enjoyably than the FFQ. In addition, investigators will assess whether blood levels of fatty acids/folate/beta-carotene are similarly associated with the DQPN method and the FFQ method, and will measure the test-retest reliability of the DQPN method.

Conditions

• Lifestyle-related Condition
• Nutrient; Excess

Interventions

Type	Name	Description
DIAGNOSTIC_TEST	DQPN Validation	We are planning to recruit 150 individuals who are patients in the Boston Heart Lifestyle Program and are already having fatty acids measured as part of clinical care, and ask them to complete the DQPN, FFQ, and a brief User Experience Questionnaire for each dietary assessment method.

Timeline

• Start date: 2018-09-11
• Primary completion: 2019-03-01
• Completion: 2019-06-01
• First posted: 2018-09-07
• Last updated: 2018-09-07