Dear All
Tomorrow's talk.
See you there.
Gilbert
Hon. Sec.
>
>> S*eminar 10: Wednesday, November 20th, QUB, Peter Froggatt Centre*,
>> *Room 02/025,* *at 12:30pm for 1pm (Coffee from 12:30)*
>>
>> Title: Combining biomarker and self-report dietary intake data: a
>> review of the state of the art and unifying statistical concepts.
>>
>> By: Dr. Claire Gormley, UCD, Ireland.
>>
>> Abstract.
>>
>> Classical approaches to assessing dietary intake are associated with
>> measurement error. Inan 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,
>> thereis 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
>>
--
_____________________________
Prof. Gilbert MacKenzie,
Formerly of
Centre of Biostatistics,
Dept. of Mathematics & Statistics,
University of Limerick,
Limerick
Ireland
Hon. Sec. RSS NI Local Group.
RSSNI ~ www.rssni.co.uk
RSS Conference Sept. 2019 in Belfast: see website
CBS ~ http://www3.ul.ie/biostatistics
BIO-SI ~ http://www3.ul.ie/bio-si
Resesearchgate ~ https://www.researchgate.net/profile/Gilbert_MacKenzie
Email: [log in to unmask]
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