A Note on a Reformulation of the KHB Method

Richard Breen, Kristian Bernt Karlson and Anders Holm

Sociological Methods & Research, 2021, vol. 50, issue 2, 901-912

Abstract: The Karlson–Holm–Breen (KHB) method has rapidly become popular as a way of separating the impact of confounding from rescaling when comparing conditional and unconditional parameter estimates in nonlinear probability models such as the logit and probit. In this note, we show that the same estimates can be obtained in a somewhat different way to that advanced by Karlson, Holm, and Breen in their original article and implemented in the user-written Stata command khb . While the KHB method and this revised KHB method both work by holding constant the residual variance of the model, the revised method makes comparisons across multiple nested models easier than the original method.

Keywords: nonlinear probability models; logit model; probit model; nested model comparisons; KHB method (search for similar items in EconPapers)
Date: 2021
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Persistent link: https://EconPapers.repec.org/RePEc:sae:somere:v:50:y:2021:i:2:p:901-912

DOI: 10.1177/0049124118789717

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