SMS scnews item created by Hannah Bryant at Thu 20 Jun 2024 1305
Type: Seminar
Modified: Mon 24 Jun 2024 1631
Distribution: World
Expiry: 27 Jun 2024
Calendar1: 27 Jun 2024 1300-1400
CalLoc1: SMRI Seminar Room (A12-03-301)
CalTitle1: SMRI Seminar: Tanya P. Garcia (UNC Chapel Hill) ’Establishing the Parallels Between Censored Covariate and Missing Data’
Auth: hannahb@w1d4n6z2.staff.sydney.edu.au (hbry8683) in SMS-SAML

SMRI Seminar

The Missing Link: Establishing the Parallels Between Censored Covariate and Missing Data

Garcia

SMRI Seminar:
'The Missing Link: Establishing the Parallels Between Censored Covariate and Missing Data'
Tanya P. Garcia (UNC Chapel Hill)

Date and time: Thursday 27 June, 13:00-14:00 AEST
Location: SMRI Seminar Room, A12-03-301
***NOTE NEW LOCATION***

Abstract: For years, researchers have focused on outcomes where the exact timing is
uncertain. Now, there is a growing interest in understanding factors that influence
timing but are not fully known, termed covariates. Until now, these two scenarios
have been treated separately, ignoring potential overlap in methodologies. We address
this gap by establishing connections between them, allowing us to identify similarities
and determine when methods can be applied interchangeably. This connection has led to
the development of five novel approaches for handling situations where some factors are
known but their timing might depend on when data collection stopped, a phenomenon termed
informative covariate censoring. We rigorously tested these methods to assess their
robustness and efficiency under various assumptions, even when those assumptions may not
be entirely accurate. We also explored their asymptotic properties and proposed a
hypothesis test for evaluating the informativeness of covariate censoring. To validate
these approaches, we conducted empirical studies using data from a study on Huntington's
disease.Specifically, we examined cognitive decline leading up to clinical diagnosis,
utilizing the newly developed methods to analyze the data. This real-world application
allows us to assess the performance of these methods in a practical setting,
demonstrating their robustness and efficiency in handling complex datasets. Overall,
our work not only introduces innovative techniques for addressing covariate-related
challenges but also provides valuable insights into cognitive decline in Huntington's
disease, showcasing the practical relevance of our findings.

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Please join us after the seminar for SMRI afternoon tea, 2:00-2:45pm every Thursday on
the SMRI Terrace (accessed through A14-04-L4.36)

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Current and past seminar info (including recordings) can be found on the seminars webpage.

Other upcoming SMRI events can be found here

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