Do not use iweights.-lroc- after -logistic- with frequency weights
works fine..
Austin Nichols once pointed out that you can compute fweights that
give the same results as pweights to any number of decimal places:
For k decimal places, use
new frequency weight = round(10^k * probability weight,1)
So for 2 decimal places:
233.43 -> 23,343 a whole number.
-Steve
On Dec 11, 2008, at 1:30 PM, Patrick McCabe wrote:
Does any one know if the ROC curves produced by a logistic
regression model using svy subpopulation and importance weights are
'legit'? The resulting model is the same as the model produced
with pweights but if you use pweights lroc does not work.
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