RSS Northern Ireland: Combining biomarker and self-report dietary intake data

 
Share Download as iCal file
Click the icons above to Share, Tweet or add this event to your calendar (iCal)
 
Featured events, RSS local group meetings

Wednesday 20 November 2019, 01:00pm

 
Location Room 02/025, Peter Froggatt Centre, Queen's University Belfast, 7, 9 College Park E, Belfast BT7 1PS

Claire Gormley (UCD, Ireland)

Abstract. 

 Classical approaches to assessing dietary intake are associated with measurement error. In an effort to address inherent measurement error in dietary self-report data there is increased interest in the use of dietary biomarkers as objective measures of intake. Furthermore, there is a growing consensus of the need to combine dietary biomarker data with self-report data. A review of state of the art methods used to combine biomarker and self-report data is conducted.

Two predominant methods, the calibration method and the method of triads, emerge as being used to combine biomarker and self-report data when aiming to improve estimates of dietary intake. Both methods crucially assume measurement error independence. To expose and understand the performance of these methods in a range of realistic settings, their underpinning statistical concepts are explored and unified, and thorough simulation studies conducted.

Results show that violation of the methods' assumptions greatly influences resulting inference, but that this effect is mitigated in cases where the biomarker and self-report data are strongly indicative of the true intake. There is much scope for the further development of models and biomarkers in tandem to achieve the ultimate goal of accurately inferring true dietary intake.

All Welcome

 

Tea/coffee from 12.30 pm

Organiser Name Gilbert Mackenzie

Email Address This email address is being protected from spambots. You need JavaScript enabled to view it.

Organising Group(s) RSS Northern Ireland Local Group

 

 

 

 

Join the RSS

Join the RSS

Become part of an organisation which works to advance statistics and support statisticians

Copyright 2019 Royal Statistical Society. All Rights Reserved.
12 Errol Street, London, EC1Y 8LX. UK registered charity in England and Wales. No.306096

Twitter Facebook YouTube RSS feed RSS feed RSS newsletter

We use cookies to understand how you use our site and to improve your experience. By continuing to use our site, you accept our use of cookies and Terms of Use.