Dr. Ratcliffe's statistical methodological research focuses on functional data analysis (models for complex curves), and the analysis of longitudinal data with informative dropout, particularly joint models for longitudinal and survival data. Her collaborative areas of interest include reproductive and women’s health, HIV/AIDS and sleep research. Research projects include modeling of changes in sleep and body composition through the menopausal transition, and modeling of labor progression.
Dr. Ratcliffe is MPI of an NIH funded research grant on Semi-parametric joint models for longitudinal and time to event data. A postdoctoral fellowship is currently available on this grant. See the Penn medicine biomedical postdoctoral jobs for more information.
Biostatistics Ph.D. Students
Epidemiology Ph.D. Students