-lambda- on SSC (please explain where user-written stuff you refer to
comes from) was originally written, I think, because someone on the list
asked how to calculate the beast. As I recall, a P-value calculation is
problematic as well as messy, as the applicability of the theory to
small samples is a matter of faith. Hence getting a bootstrap confidence
interval and see if it straddles zero is surely the way to go. That
requires no extra programs.
The mention of SPSS is not decisive here. Measures of association like
this proliferate in the literature like mushrooms in the dark and
conceal as much as they reveal. StataCorp's prejudice has long been that
it is better to think in terms of modelling commands.
Nick
[email protected]
John Antonakis
Does anyone have code for calculating lambda (nominal to nomial
association) as well as the associated approximate p-value. I know of
the lambda ado file (by Nick Cox); however, is there anything else out
there?
It is strange that STATA doesn't have this measure in the tab
function--this is something that is "canned" in SPSS.
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