Current Research > Methods Core > CAPS Methods Core Seminars

Methods Core - Seminars

Please note: All seminars take place at CAPS in the McKusick Conference room, unless otherwise noted. Directions to CAPS.

See materials from past seminars.

Quantitative Methods

 

Friday, November 20, 10-11:30 am

  • Searching for Latent Patterns in Longitudinal Data: How Well Do Latent Growth Mixture Models Work?
    Kevin Delucchi , MD, Professor in Residence, UCSF Department of Psychiatry

In the first part of this talk we present an example of an application of latent growth mixture modeling to the study of alcohol consumption. We review the steps of fitting such models to data and methods designed to help understand the results. This work lead to the research discussed in the second part of this talk. Here we present the findings of ongoing work to determine how well such models capture actual class membership and the features that determine how well such models operate.

 

Friday, December 11, 10-11:30 am

  • Statistical CSI: An attempt to detect fraud in papers published from a medical biochemistry department
    Mark Hudes, PhD, Biostatistician at UC Berkeley and Oakland's Children's Hospital, UCB Department of Nutritional Sciences

A statistical method is presented to test whether data are consistent with minimum statistical variability expected in biological experiments. The method was applied to the data presented in data tables in a subset of 84 articles among more than 200 published by 3 investigators in a medical biochemistry department at a major university in India and to 29 “control” articles selected by key word PubMed searches. Major conclusions:

  1. Unusual clustering was observed for data from the majority of articles analyzed that were published by the 3 investigators from 2000-2007.
  2. Unusual clustering was not observed for data from any of the articles published by the 3 investigators from 1992-1999.
  3. Unusual clustering was not observed for data from any of the “control” articles that came from outside this university.

 

Friday, January 20, 2010, 10-11:30 am

We will present highlights from a one-day short course we participated in recently.

 

 

Qualitative Methods


 

Past seminars