Biography
Dr. Pfeiffer was the recipient of a Fulbright Fellowship to study applied statistics in 1992-1993, and received a Ph.D. in mathematical statistics from the University of Maryland, College Park, in 1998. She joined NCI in 1999 as a CRTA fellow. She was appointed as a principal investigator in 2001 and was tenured as a senior investigator in February 2007. Her research focuses on statistical methods for laboratory methods and problems arising in genetic epidemiology.
Research Interests
- Statistical methods for family data accounting for ascertainment
- Mixture models and applications
- Methods for analysis of high dimensional data
- Absolute risk modeling
- Power considerations for association studies
Keywords
genetic epidemiology; ascertainment; family studies; DNA pooling; familial aggregation; mixture models; random effects models; laboratory methods; association studies.
Selected Publications
- Pfeiffer RM, Carroll RJ, Wheeler W, Whitby D, Mbulaiteye S. Combining assays for estimating prevalence of human herpesvirus 8 infection using multivariate mixture models. Biostatistics, 9(1), pp 137-151, 2008.
- Pfeiffer RM, Ryan L, Litonjua A, Pee D, A case-cohort design for assessing covariate effects in longitudinal studies. Biometrics 61, pp 982-991, 2005
- Pfeiffer RM, Chatterjee N. On a supplemented case-control design. Biometrics 61, 584-590, 2005.
- Molinaro AM, Simon R,Pfeiffer RM, Prediction error estimation: a comparison of resampling methods. Bioinformatics, 21, pp 3301-3307, 2005.