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Re: st: predict or adjust after logistic?
To predict probabilities and 95% CIs of the predicted probabilities after
a multivariate logistic model, I have previously used the following
logistic y x1 x2 x3
predict lr_index, index
predict se_index, stdp
gen p_hat = exp(lr_index)/(1 +exp(lr_index))
gen lb = lr_index - invnorm(0.975)*se_index
gen ub = lr_index + invnorm(0.975)*se_index
gen plb = exp(lb)/(1+exp(lb))
gen pub = exp(ub)/(1+exp(ub))
bysort x1: tabstat p_hat plb pub
Predxcon or predxcat
logpred , regpred
The commands at Scott Long's Homepage (http://www.indiana.edu/~jslsoc/)
<GDaniel@healthcore.com> To: "'email@example.com'" <firstname.lastname@example.org>
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owner-statalist@hsphsun2. Subject: st: predict or adjust after logistic?
Please respond to
However, this code does not allow me to predict probabilities,
by(x1), while keeping the other covariates held constant, as the adjust
command does. It seems that keeping the other covariates held constant
while examining the predicted probabilities individual covariates is
useful. Is it possible for me to do that?
Thanks in advance.
Manager, Health Outcomes Research
Health Core, Inc.
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