Stata The Stata listserver
[Date Prev][Date Next][Thread Prev][Thread Next][Date index][Thread index]

st: Using mlfit


From   siyama@who.int
To   statalist@hsphsun2.harvard.edu
Subject   st: Using mlfit
Date   Fri, 29 Aug 2003 11:34:36 +0200

Dear Stata-listers,

As part of an exploratory analysis, I am running a series of logistic models
to investigate the best predictor of a binary variable "lbw" using three
time point measurements (X3,X6 and X12 at ages 3,6 and 12 months,
respectively) given that all explanatory variables are highly significant.

xi: logit lbw i.X3 (model 1)
xi: logit lbw i.X6 (model 2)
xi: logit lbw i.X12 (model 3)

I wish to use the command "mlfit" to obtain the AIC and SC criteria (for
example as seen below from model 1)

. mlfit
 Criteria for assessing logistic model fit
 Akaike's Information Criterion (AIC) and Schwarz's Criterion (SC)

----------------------------------------------------------------------------
--
 AIC           SC           | -2 Log Likelihood    Num.Parameters
----------------------------+-----------------------------------------------
--
 9271.8362     9288.2391    |  9267.8362              2
----------------------------------------------------------------------------
--

The problem is "mlfit" has no options to store the stats above and I wish to
display all of those in a matrix as snap-shot of the "goodness of fit" of
each model.

Many thanks for your help in advance.


Amani

*
*   For searches and help try:
*   http://www.stata.com/support/faqs/res/findit.html
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/



© Copyright 1996–2014 StataCorp LP   |   Terms of use   |   Privacy   |   Contact us   |   What's new   |   Site index