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Francisco J. Diaz-Ceballos, PhD

Francisco Diaz-Ceballos portrait
Professor, Francisco J Diaz-Ceballos, Biostatistics & Data Science

Professional Background

I obtained my B.S. degree in Mathematics in 1993 and my M.S. degree in Statistics in 1996 at the National University of Colombia at Medellin. Right after obtaining my B.S. degree I was involved in teaching activities in the Department of Mathematics of this university and then I was hired as a faculty after obtaining my M.S. degree. Between 1998 and 2002 I did my PhD in Statistics at the Department of Statistics of the University of Kentucky, Lexington. During my stay in Lexington, I worked as a Research Assistant of the Mental Health Research Center at Eastern State Hospital under the Direction of psychiatrist Dr. Jose de Leon, where I acquired a considerable knowledge of the biomedical, epidemiological and pharmacological applications of statistics and was immersed in a robust international research collaboration network of psychiatrists and pharmacologists that provided me with a great deal of research experience and that greatly influenced the direction of my research activities after my PhD graduation. In 2003 I returned to the National University of Colombia where I reassumed my teaching and research activities as a Faculty of the Department of Statistics, contributing to the education of engineering students and students of the B.S., M.S. and PhD programs in statistics. In 2009, I was hired by the Department of Biostatistics and Data Science of the University of Kansas Medical Center, where I have enjoyed contributing to the development of the Graduate programs in Biostatistics and conducting consultation, research and service activities.

Education and Training
  • BS, Mathematics, National University of Colombia, Medellin, Colombia
  • MS, Statistics, National University of Colombia, Medellin, Colombia
  • PhD, Statistics, University of Kentucky, Lexington, KY

  • Diaz, F.., J.. 2016. Measuring the individual benefit of a medical or behavioral treatment using generalized linear mixed-effects models. Statistics in Medicine, 35 (23), 4077-4092.
  • Diaz, F.., J.. 2019. Estimating individual benefits of medical or behavioral treatments in severely ill patients. Statistical Methods in Medical Research, 28, 911-927.
  • Diaz, F.., J.. 2018. Construction of the Design Matrix for Generalized Linear Mixed-Effects Models in the Context of Clinical Trials of Treatment Sequences. Revista Colombiana de EstadĂ­stica, 41, 191-233.
  • Diaz, F.., J., Berg, M.., J., Krebill, R., Welty, T., Gidal, B.., E., Alloway, R., Privitera, M.. 2013. Random-Effects Linear Modeling and Sample Size Tables for Two Special Crossover Designs of Average Bioequivalence Studies: The Four-Period, Two-Sequence, Two-Formulation and Six-Period, Three-Sequence, Three-Formulation Designs. Clinical Pharmacokinetics, 52 (12), 1033-1043.
  • Diaz, F.., J., McDonald, P.., R., Pinter, A., Chaguturu, R.. 2015. Measuring and Statistically Testing the Size of the Effect of a Chemical Compound on a Continuous In-Vitro Pharmacological Response Through a New Statistical Model of Response Detection Limit. Journal of Biopharmaceutical Statistics, 25 (4), 757-780.
  • Diaz, F.., J., Cogollo, M.., R., Spina, E., Santoro, V., Rendon, D.., M., de Leon, J.. 2012. Drug Dosage Individualization Based on a Random-Effects Linear Model. Journal of Biopharmaceutical Statistics, 22 (3), 463-484.
  • Diaz, F.., J., Rivera, T.., E., Josiassen, R.., C., de Leon, J.. 2007. Individualizing drug dosage by using a random intercept linear model. Statistics in Medicine, 26 (9), 2052-2073.
  • de Leon, J., Diaz, F.., J.. 2005. A meta-analysis of worldwide studies demonstrates an association between schizophrenia and tobacco smoking behaviors. Schizophrenia Research, 76 (2-3), 135-157.
  • de Leon, J., Diaz, F.., J., Rogers, T., Browne, D., Dinsmore, L.. 2002. Initiation of daily smoking and nicotine dependence in schizophrenia and mood disorders. Schizophrenia Research, 56 (1-2), 47-54.
  • Diaz, F.., J., James, D., Botts, S., Maw, L., Susce, M.., T, de Leon, J.. 2009. Tobacco smoking behaviors in bipolar disorder: a comparison of the general population, schizophrenia, and major depression. Bipolar Disorders, 11 (2), 154-165.