-----Original Message-----
From: "Kanter, Rebecca" <[email protected]>
Date: Wed, 15 Jul 2009 18:37:42
To: [email protected]<[email protected]>
Subject: st: gllamm with pweights
Hi,
I am running 2 level multi-level models using gllamm. Level one is individuals and Level two is either the urban or rural part of the country's state (i.e. urstate).
I would like to use the survey pweights I have...I only have pweights for the individual level (adul_sr), but it seems that you need pweights for all levels specified in gllamm (?) so this is what I did to create pweights for urstate based on these weights:
collapse (sum) sadul_sr=adul_sr , by(urstate)
then I merged them to the rest of my dataset
and made this weight for the gllamm:
*MLM-level pweights
generate pwadulsr1=adul_sr
*urstate summed adul_sr
generate pwadulsr2=sadul_sr
Then ran the most basic random-intercept only (around urstate) in gllamm and get the follow error below and am assuming it is a pweight problem but I do not know where the problem is coming from so if anyone has insight that would be much appreciated. Thanks so much!
(note: diettag==1 & exwt==1 is the subpopulation i want to look at for this series of models)
gllamm bmi2 if diettag==1 & exwt==1, i(urstate) pweight(pwadulsr) adapt nip(15)
Running adaptive quadrature
Convergence not achieved: try with more quadrature points
___________________________________________
Rebecca M. Kanter
PhD Candidate
Johns Hopkins Bloomberg School of Public Health
Department of International Health
Center for Human Nutrition
*
* For searches and help try:
* http://www.stata.com/help.cgi?search
* http://www.stata.com/support/statalist/faq
* http://www.ats.ucla.edu/stat/stata/
*
* For searches and help try:
* http://www.stata.com/help.cgi?search
* http://www.stata.com/support/statalist/faq
* http://www.ats.ucla.edu/stat/stata/
