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National Cancer Institute U.S. National Institutes of Health www.cancer.gov
Biostatistics Branch. Developing statistical methods for epidemiology and collaborating on epidemiologic studies.

Interactive Risk Attributable Program (IRAP v2.2)

IRAP is an interactive computer program which calculates both point estimates and confidence intervals for attributable risk, based on regression models. Modeling consists of three conceptual phases: creating a library of variables, defining the model, and running the model.