R help - Apr 2005 - Latent Class Analyisis in R

Hi,

I am new to R. I would like to know if there is a package available that
will estimate a 2-class Latent Class Analysis, with trichotomous
observed variables, some of which are free to covary.  

I have read the PDF files regarding the e1071 and gllm packages, but it
appears that these only allow dichotomous measured variables, and it is
not clear to me whether they allow the measured variables to covary.

Thanks!

Helen Dennis
Education Associate
Assessment and Analysis Group
Delaware Dept. of Education
401 Federal Street
Suite 2
Dover, DE 19707
hdennis at doe.k12.de.us
tel: 302-739-6700
fax: 302-739-3092

Helen,

You may consider using LCA 1.1, written by Niels Waller at
Vanderbilt University.  You may need to get it from his
website at Vanderbilt instead of CRAN, at least it was the
case in the past.

Tim Liao

---- Original message ----
>Date: Mon, 18 Apr 2005 12:29:41 -0400
>From: "Dennis, Helen" <hdennis at doe.k12.de.us>  
>Subject: [R] Latent Class Analyisis in R  
>To: <r-help at stat.math.ethz.ch>
>
>Hi,
>
>I am new to R. I would like to know if there is a package
available that
>will estimate a 2-class Latent Class Analysis, with trichotomous
>observed variables, some of which are free to covary.  
>
>I have read the PDF files regarding the e1071 and gllm
packages, but it
>appears that these only allow dichotomous measured variables,
and it is
>not clear to me whether they allow the measured variables to
covary.
>
>Thanks!
>
>Helen Dennis
>Education Associate
>Assessment and Analysis Group
>Delaware Dept. of Education
>401 Federal Street
>Suite 2
>Dover, DE 19707
>hdennis at doe.k12.de.us
>tel: 302-739-6700
>fax: 302-739-3092
>
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