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Before-After Studies Part I

Types of studiesNa

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Before-After Studies Part I

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    1. Before-After Studies Part I Fall 2010

    2. Types of studies Nave before-after studies Before-after studies with control group Empirical Bayes approach (control group) Full Bayes Important Issues Selection bias Regression-to-the-mean Non-linear relationship between crashes and traffic flow BEFORE-AFTER STUDIES

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