HB08: Adjusted & combined differences as in Hansen & Bowers (2008)

In RItools: Randomization Inference Tools

Adjusted & combined differences as in Hansen & Bowers (2008)

Description

Adjusted & combined differences as in Hansen & Bowers (2008)

Usage

HB08(alignedcovs)

Arguments

alignedcovs

A CovsAlignedToADesign object

Value

list with components:

z

First item

p

Second item

Msq

Squared Mahalanobis distance of combined differences from origin

DF

degrees of freedom

adj.diff.of.totals

Vector of sum statistics z't - E(Z't), where t represents cluster totals of the product of the covariate with unit weights. Hansen & Bowers (2008) refer to this as the adjusted difference vector, or d(z,x).

tcov

Matrix of null covariances of Z'x-tilde vector, as above.

References

Hansen, B.B. and Bowers, J. (2008), “Covariate Balance in Simple, Stratified and Clustered Comparative Studies,” Statistical Science 23.

See Also

balanceTest, alignDesignsByStrata

RItools documentation built on June 8, 2025, 10:41 a.m.