scholarly journals Measurement error correction and sensitivity analysis in longitudinal dietary intervention studies using an external validation study

Biometrics ◽  
2019 ◽  
Vol 75 (3) ◽  
pp. 927-937 ◽  
Author(s):  
Juned Siddique ◽  
Michael J. Daniels ◽  
Raymond J. Carroll ◽  
Trivellore E. Raghunathan ◽  
Elizabeth A. Stuart ◽  
...  
Keyword(s):  
Sensitivity Analysis ◽  
Measurement Error ◽  
Error Correction ◽  
Validation Study ◽  
Intervention Studies ◽  
Dietary Intervention ◽  
External Validation ◽  
External Validation Study ◽  
Measurement Error Correction

Calibrating validation samples when accounting for measurement error in intervention studies

2021 ◽  
pp. 096228022098857
Author(s):  
Benjamin Ackerman ◽  
Juned Siddique ◽  
Elizabeth A Stuart
Keyword(s):  
Measurement Error ◽  
Lifestyle Intervention ◽  
Intervention Studies ◽  
Sodium Intake ◽  
External Validation ◽  
Validation Sample ◽  
Intervention Trial ◽  
Treatment Effect Estimation ◽  
Effect Estimation ◽  
Intervention Trials

Many lifestyle intervention trials depend on collecting self-reported outcomes, such as dietary intake, to assess the intervention’s effectiveness. Self-reported outcomes are subject to measurement error, which impacts treatment effect estimation. External validation studies measure both self-reported outcomes and accompanying biomarkers, and can be used to account for measurement error. However, in order to account for measurement error using an external validation sample, an assumption must be made that the inferences are transportable from the validation sample to the intervention trial of interest. This assumption does not always hold. In this paper, we propose an approach that adjusts the validation sample to better resemble the trial sample, and we also formally investigate when bias due to poor transportability may arise. Lastly, we examine the performance of the methods using simulation, and illustrate them using PREMIER, a lifestyle intervention trial measuring self-reported sodium intake as an outcome, and OPEN, a validation study measuring both self-reported diet and urinary biomarkers.

scholarly journals SDN Based in-Network Two-Staged Video QoE Estimation With Measurement Error Correction for Edge Network

IEEE Access ◽  
2021 ◽  
Vol 9 ◽  
pp. 39733-39745
Author(s):  
Shumpei Shimokawa ◽  
Yuzo Taenaka ◽  
Kazuya Tsukamoto ◽  
Myung Lee
Keyword(s):  
Measurement Error ◽  
Error Correction ◽  
Edge Network ◽  
Measurement Error Correction

Pre-screening Ability of the Functional-Belief-Based Alcohol Use Questionnaire (FBAQ) among Chiang Mai University Undergraduates: An External Validation Study

2021 ◽  
Vol 227 ◽  
pp. 109002
Author(s):  
Phichayut Phinyo ◽  
Nat Ungrungseesopon ◽  
Nutthida Namsongwong ◽  
Onwara Visavakul ◽  
Sirawit Chaiya ◽  
...  
Keyword(s):  
Alcohol Use ◽  
Validation Study ◽  
External Validation ◽  
Chiang Mai ◽  
External Validation Study ◽  
University Undergraduates
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