articleJournal of Personality AssessmentFeb 10, 2009Closed access

The Analysis of Count Data: A Gentle Introduction to Poisson Regression and Its Alternatives

SCStefany CoxeSGStephen G. WestLSLeona S. Aiken

Arizona State University

PubMed
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Abstract

Count data reflect the number of occurrences of a behavior in a fixed period of time (e.g., number of aggressive acts by children during a playground period). In cases in which the outcome variable is a count with a low arithmetic mean (typically

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Topics & keywords

Topics
Keywords
  • Psychology
  • Poisson regression
  • Count data
  • Statistics
  • Regression analysis
  • Poisson distribution
  • Regression
  • Econometrics
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