.prepare_spec_matrix | R Documentation |
(Internal) Helper function for design-based meat matrix calculation
.prepare_spec_matrix(x, ...)
x |
a fitted |
a m \times (p+2)
matrix of cluster sums of design-based
estimating equations scaled by \sqrt{m_{b0}m_{b1}}/m_{b}
. Here
m
is the number of clusters, p
is the number of covariates used
in the prior covariance adjustment (excluding intercept)
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