Ramzi W. Nahhas, Ph.D.
Assistant Professor
(937) 775-1421 (voice)
(937) 775-1456 (fax)
E-mail: ramzi.nahhas@wright.edu
Major Active Projects
- Adiposity, Disease Risk Factors, and Lifetime Health
- Updating Skeletal Maturity for U.S. Children
- Opioid Use Trajectories and HIV Risk Among Young Adults in Ohio
- Longitudinal Modeling of Craniofacial Growth Trajectories
- Longitudinal data analysis
- Bayesian longitudinal plateau model of adult grip strength with unknown change-points: Example R2WinBUGS and WinBUGS code for model fitting and combining posteriors over multiple imputations
- Prediction of future mean, standard deviation, and percentiles of skeletal age given a current assessment
Education
The Ohio State University, Columbus, B.S., 1993, Mathematics
The Ohio State University, Columbus, M.S., 1995, Statistics
The Ohio State University, Columbus, Ph.D., 1999, Biostatistics
Professional Positions
2009-present: Assistant Professor, Lifespan Health Research Center, Department of Community Health, Boonshoft School of Medicine, Wright State University, Dayton, OH
2008-2009: Research Assistant Professor, Lifespan Health Research Center, Department of Community Health, Boonshoft School of Medicine, Wright State University, Dayton, OH
2007-2008: Sr. Biostatistician, Lifespan Health Research Center, Department of Community Health, Boonshoft School of Medicine, Wright State University, Dayton, OH
2006-2007: Language Survey Coordinator, Department of Linguistics, Payap University and SIL International, Chiang Mai, Thailand
2004-2006: Language Survey Specialist, Department of Linguistics, Payap University and SIL International, Chiang Mai, Thailand
2002: Statistics Instructor, Graduate Institute of Applied Linguistics, Dallas, TX
2000-2007: Language Surveyor, Wycliffe Bible Translators, Dallas, TX and Chiang Mai, Thailand (seconded to SIL International 2003-2007)
1999-2000: Research Scientist, Battelle, Columbus, OH
1999: Research Assistant, Biostatistics Program, The Ohio State University, Columbus, OH
1996-1998: Research Assistant, Department of Physical Medicine and Rehabilitation, The Ohio State University, Columbus, OH
1996: Research Assistant, Department of Preventive Medicine, The Ohio State University, Columbus, OH
1994: Statistics Intern, USDA National Agricultural Statistics Service, Des Moines, IA
1994-1998: Graduate Teaching Assistant, Department of Statistics, The Ohio State University, Columbus, OH
1993, 1995: Statistics Intern, Battelle, Columbus, OH
1992-1993: Research Assistant, Department of Medical Microbiology and Immunology, The Ohio State University, Columbus, OH
1990-1991: Teaching Assistant, Department of Mathematics, The Ohio State University, Columbus, OH
