Dr. Sarah Ratcliffe is a Professor of Biostatistics at the University of Virginia. She has a background in statistics and computing, with specific training and expertise in the analysis of correlated data, especially longitudinal and functional data, in predictive modeling, as well as expertise in modeling informative missing data / dropout. Her research interests are functional data analysis (models for complex curves), joint models for longitudinal and survival data. Research projects include modeling of changes during labor, and modeling RFM data.