Term: Zero-Inflated Model

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Glossary Definition

Last Updated: 2012-04-20

Definition:

A type of regression model used to analyze a dependent variable that has excess zero values. Zero-Inflated models assume that the data are a mixture of two separate data generation processes: one generates only zeros and the other process generates non-zero counts.

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References 

  • Garland A, Fransoo R, Olafson K, Ramsey C, Yogendran M, Chateau D, McGowan K. The Epidemiology and Outcomes of Critical Illness in Manitoba. Winnipeg, MB: Manitoba Centre for Health Policy, 2012. [Summary] [Full Report] (View)