Research Projects:

Ongoing:

• Analysis Methods for Cluster Randomized Trials
• Soil Ingestion Meta Analysis
• Hormesis
  

Completed:

• New Haven Schools Trial
• Pathways to Drug Use among Youth
• Seasonal Variation in Cholesterol
• Watch II Study
• Exposure Assessment Studies
• Low Level Lead Studies in Mice Ivo

Presentations

• "Sampling, WLS, and Mixed Models," (handout pdf) Festschrift to Honor Professor Gary Koch, Ed Stanek and Julio Singer, 10/13/2009, UNC Chapel Hill. (Draft manuscript)
• Perspectives on Exposure Assessment: Soil Ingestion and Pica (5/24/2005 presentation at the EPA Soil/Dust Ingestion Mouthing Behavior Colloquium, Arlington, VA) (To print: pdf 21 p)
• Predicting Random Effects in Group Randomized Trials (10/7/03 presentation in the Dept of Biostatistics, Yale Medical School,TO Print: pdf 26 pages, 285k)
• Predicting Random Effects of Realized Clusters in Finite Populations (3/31/03 presentation at the International Biometric Society Eastern North American Region 2003 Spring Meetings, Tampa, Flordia)
• Understanding Predictors of Realized Random Effects in Mixed Models (12/6/02 presentation at the University of Sao Paulo, Brazil)
• What are Mixed Models? Why are they used? An Introduction (11/15/02)