Chunk #30 — 4.0 A New Hybrid Sandwich Estimator

Source

Modification of the Sandwich Estimator in Generalized Estimating Equations with Correlated Binary Outcomes in Rare Event and Small Sample Settings.

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Our recommended solution will use an averaged or pooled covariance, just as Pan (2001) did, and scale these values using the corrections originally proposed by Morel (2003).