da() generally uses different inverse-variance weights for each
subgroup series. ad() uses the interaction-series weights. swada()
applies one common vector to both subgroup series (swada_reference
and swada_nonref are identical); under the default this equals the AD
weights.
Arguments
- da
A
da()orconventional()fit.- ad
An
ad()fit, or aswada()fit in the historical two-argument call.- swada
A
swada()fit. Optional whenadis already a SWADA object.
Details
Warns if the supplied fits do not share the same engine and method.
Historical two-argument call compare_weights(conventional, swada)
still works. CAMS information fractions are not SWADA weights; compare
pooled IF with compare_ifrac().
