Citation

Wood GR. Accid. Anal. Prev. 2005; 37(2): 267-273.

Affiliation

Department of Statistics, Macquarie University, Sydney 2109, NSW, Australia.

Copyright

(Copyright © 2005, Elsevier Publishing)

DOI

10.1016/j.aap.2004.10.005

PMID

15667813

Abstract

Generalised linear models, with "log" link and either Poisson or negative binomial errors, are commonly used for relating accident rates to explanatory variables. This paper adds to the toolkit for such models. It describes how confidence intervals (for example, for the true accident rate at given flows) and prediction intervals (for example, for the number of accidents at a new site with given flows) can be produced using spreadsheet technology.