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

In markmfredrickson/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

markmfredrickson/RItools documentation built on Jan. 15, 2024, 10:53 p.m.