BRG IDATA Analyses

Principal Investigator

Name
Kevin Dodd

Degrees
PhD

Institution
National Cancer Institute, National Institutes of Health

Position Title
Mathematical Statistician

Email
doddk@mail.nih.gov

About this CDAS Project

Study
IDATA (Learn more about this study)

Project ID
IDATA-53

Initial CDAS Request Approval
Mar 17, 2022

Title
BRG IDATA Analyses

Summary
This project will investigate multiple facets of the measurement error structure of the self-report and device-based diet and physical activity measures in IDATA relative to each other and to gold-standard biomarker measurements.

Aims

* Model-based estimates of Attenuation factors/Correlation with truth for self-report and device-based measures
* Evaluation of complete measurement error structure for self-report and device-based measures
* Sensitivity analyses for analytical methods that use self-report or device based measures in lieu of truth
* Comparison of intake/physical activity distributions based on the various measures
* Use of IDATA results as external/supplemental information in measurement error modeling of other data sources

Collaborators

Victor Kipnis - NCI/DCP/BRG
Doug Midthune - NCI/DCP/BRG
Sharon Kirkpatrick - U Waterloo (Canada)