Statistical Modeling and Analysis
SAS, SPSS, and SUDAAN are routinely used by UMTRI researchers to perform statistical modeling of injury risk and injury causation using NASS-CDS, CIREN, FARS, GES, CODES, and UMIVOR databases. Rigorous analyses of these databases are performed using appropriate statistical techniques and tools while considering the strengths and limitations of each database. Researchers specialize in statistical modeling of accident data based on complex sample surveys that include clustering, stratification, and weights. In addition, they have developed effective methods for handling missing exposure data. Other areas of expertise include Poisson/negative binomial regression models for handling extra variability often encountered in observational studies, statistical methods for rates, development of Bayesian hierarchical models based on output from Markov chain Monte Carlo (MCMC) simulation, and analysis of categorical and clustered categorical data typically found in transportation-related databases.Expertise in in-depth crash investigations, in the biomechanics of injury causation, and in occupant positioning provide UMTRI researchers with unique insight when interpreting results of these analyses.
Recent PublicationsSEE MORE
This study examined the changes in the relative proportions of male and female drivers in the United States from 1963 through 2013. The...
Yu Chen, Veronica J. Berrocal, C. Raymond Bingham, Peter X. K. Song
journal article IN: Spatial and spatio-temporal epidemiology. Vol. 8 (Apr. 2013), p. 11-22.
Injury resulting from motor vehicle crashes is the leading cause of death among teenagers in the US. Few programs or policies have been...
Linda Jarossi, Daniel Hershberger, John Woodrooffe.
This report provides documentation for UMTRI-s file of Buses Involved in Fatal Accidents (BIFA), 2008, including distributions of the...
Anne Matteson, Linda Jarossi, John Woodrooffe.
This document presents aggregate statistics on buses involved in traffic accidents in 2008. The statistics are derived from the Buses...
Paul E. Green, Lidia P. Kostyniuk, Timothy J. Gordon, Matthew P. Reed.
NHTSA selected the vehicle footprint (the measure of a vehicle’%x;s wheelbase multiplied by its average track width) as the...