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All courses for every first-year Science student will be delivered online this fall. A limited number of students in their second, third and fourth years will return to campus for part of the semester.

Colloquium- Erica E. M. Moodie - The SIMEX correction for measurement error: recent extensions for health research

Description

TITLE: The SIMEX correction for measurement error: recent extensions for health research

SPEAKER: Erica. E. M. Moodie (McGill University) 

ABSTRACT: The simulation-extrapolation (SIMEX) procedure for correcting measurement error was proposed more than 25 years ago by Cook & Stefanski. The approach needs no replicate data, but does require the analyst to know the distribution of the measure error. In this talk, I will explain how the SIMEX procedure works and why it was developed, and demonstrate considerations for its use in two-step procedures frequently encountered in causal inference where one first estimates a propensity score before using it to de-confound a treatment-outcome relationship. I will also discuss an extension to a setting where the measurement error is not mean zero, but rather the measured covariate systemically overestimates the true, underlying value.

Location: Virtual 

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https://mcmaster.zoom.us/j/92441720085?pwd=VDAwRHQvV0tBK2xZYlloTE45bkRndz09

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McMaster University - Faculty of Science | Math & Stats