Bookmark and Share

Notice: On March 31, it was announced that Statalist is moving from an email list to a forum. The old list will shut down at the end of May, and its replacement, statalist.org is already up and running.


[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: st: ssm with hierarchical data


From   David Souther <davidsoutheremail@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: ssm with hierarchical data
Date   Sat, 20 Mar 2010 15:29:48 -0500

> Is there some way to model the different levels of data aggregation
> (or some kind of hlm, xt, or clustering technique)??

To be clear--is there some way to model the different levels of data
aggregation *while still invoking -ssm- command* ??

Thanks again,

David




On Sat, Mar 20, 2010 at 3:24 PM, David Souther
<davidsoutheremail@gmail.com> wrote:
> Hello--
>
> I've got data on students across campuses with variables measured at
> both levels, and I would like to account for the different levels of
> aggregation while using -ssm-.  Currently, I'm using -ssm- to account
> for the switching for a certain student treatment (it's not selection
> because I observe students whether they got the treatment or not), so
> the model looks like:
>
> ssm count_truancies i_SES i_atrisk i_GPA  i_absences i_gender i_grade
> c_teacherexperience c_diversity c_crime year1 year2,  ///
> s(treatment =  i_SES i_atrisk i_GPA i_immigrant i_absences
> c_teacherexperience  c_treatmentFUNDS ) q(16) family(poiss) link(log)
> adapt
>
> Where the DV for the main equation is a count of the number of
> truancies, the switch model is determined by the dichotomous DV
> treatment, and there are several individual level vars (prefix of
> "i_") and campus level vars (prefix of "c_").  I've got another level
> of school district data that I'd like to add to this model at some
> point in the future.
>
> Is there some way to model the different levels of data aggregation
> (or some kind of hlm, xt, or clustering technique)??
>
> Thanks in advance,
> David
> *
> *   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/


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