Date/Time
Date(s) - 25/06/2025
2:00 pm - 3:30 pm
Category(ies)
IASS Webinar 53: Multiphase sampling: design, analysis, computation
Speaker: Thomas Lumley
Professor of Biostatistics, University of Auckland, New Zealand
25 June 2025 at 2pm – 3:30pm (CET)
All are invited to the webinar, organized by the International Association of Survey Statisticians.
Please register for the IASS Webinar at: https://us06web.zoom.us/webinar/register/1217473976131/WN_hK3Ee-E4QGiusr4i4_u1LQ [us06web.zoom.us]
After registering, you will receive a confirmation email containing information about joining the webinar. There will be time for questions. The webinar will be recorded and made available on the IASS and ISI web site. See below for the abstract and biography of the speakers.
Webinar Abstract
Biomedical and health studies often benefit from subsampling, because a new or expensive assay is desired for stored blood and tissue samples or because electronic health records need to be validated against clinical notes, or for other reasons. Notably, many of these applications do not involve non-response, so optimization of the design and analysis is worthwhile. As with all statistical methods, these require software, and it is desirable for analysts with subject-matter expertise can run as much of the analysis as possible. I will talk about two-phase sampling in medical research and about software development for survey analysis. A unifying principle for these two topics is the concept of influence functions as an approach to generalizing classical theory and methods from survey statistics.
Biography
Thomas Lumley is Professor of Biostatistics in the Department of Statistics at the University of Auckland. He is a Fellow of the ASA and the Royal Society of New Zealand, and a member of the R Core Development Team. Thomas develops the survey package for R and has a research focus on design and analysis of two-phase samples in health studies.