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Leah J. Welty

Northwestern University Feinberg School of Medicine

Professor, Department of Preventive Medicine - Biostatistics
Professor, Department of Psychiatry and Behavioral Sciences
Director, Biostatistics Collaboration Center


Areas of Focus

  • Biostatistics collaboration
  • Methods for conducting reproducible research
  • Health needs and outcomes of delinquent youth


  • Application of biostatistics to population health, clinical and basic sciences
  • Development of software tools for reproducible research
  • Development of biostatistics core resources


  • Development team lead for StatTag, a free, open-source software program connecting Microsoft Word to R, SAS and Stata
  • Lead biostatistician for the Northwestern Juvenile Project - a large-scale longitudinal study of psychiatric disorders and risky behaviors in dlinquent youth
  • Lead biostatistician for NJP: NextGen, a study of the chlidren of the original Northwestern Juvenile Project participants
  • Director of the Biostatistics Collaboration Center, the core biostatistics resource for non-cancer research at Northwestern's Feinberg School of Medicine