Parameter Orthogonality and Bias Adjustment for Estimating Functions

Bent Jørgensen and Sven Jesper Knudsen

Scandinavian Journal of Statistics, 2004, vol. 31, issue 1, 93-114

Abstract: Abstract. We consider an extended notion of parameter orthogonality for estimating functions, called nuisance parameter insensitivity, which allows a unified treatment of nuisance parameters for a wide range of methods, including Liang and Zeger's generalized estimating equations. Nuisance parameter insensitivity has several important properties in common with conventional parameter orthogonality, such as the nuisance parameter causing no loss of efficiency for estimating the interest parameter, and a simplified estimation algorithm. We also consider bias adjustment for profile estimating functions, and apply the results to restricted maximum likelihood estimation of dispersion parameters in generalized estimating equations.

Date: 2004
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