Re: [R] path analysis

From: Manel Salamero <>
Date: Mon 15 Aug 2005 - 03:34:27 EST

This solves part of my problem with the independent ordinal variables, but my dependent variable is truly categorial (illness/no illness). Polychoric correlation implies that data are continuous, which in not the case. Is possible to implement logistic regression in the path model?


Manel Salamero

Dear Manel,

> -----Original Message-----
> From:
> [] On Behalf Of
> Sent: Saturday, August 13, 2005 2:02 PM
> To:
> Subject: [R] path analysis
> Someone knows if it is possible to perform a path analysis
> with sem package (or any other) to explain a dependent
> *dichotomus* variable?

Yes -- you can use the hetcor() function in the polycor package to generate a correlation matrix and boot.sem() in the sem package to get standard errors or confidence intervals. Make sure that the dichotomous variables are represented as factors. See ?boot.sem for an example.

I hope this helps,
 John mailing list PLEASE do read the posting guide! Received on Mon Aug 15 03:32:32 2005

This archive was generated by hypermail 2.1.8 : Fri 03 Mar 2006 - 03:39:49 EST