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Re: st: Can Spearman's rho be used to measure of the degree of association between two binary variables ?


From   Marcos Vinicius <bioestatistico@inbox.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Can Spearman's rho be used to measure of the degree of association between two binary variables ?
Date   Sun, 20 May 2012 14:19:40 -0800

Hello,
I will try to explain with more details. I was conducting a multicollinearity diagnostic analysis for a logistic regression using spearman correlation and VIF. Important detail:All the covariates are binary variables.Considering that when both(2) variables are dichotomous, a Pearson correlation coefficient is equivalent to the phi coefficient and to Spearman coefficient,would not be wrong write in the statistical analysis text(topic)   that multicollinearity  was conducted using spearman correlation or I have to change the words “spearman correlation” to “Phi coefficient”(in the text) to be 100% correct in terms of methodology description.?
REgards,
Marcos.

> -----Original Message-----
> From: stoll@rice.edu
> Sent: Sun, 20 May 2012 16:24:41 -0500
> To: statalist@hsphsun2.harvard.edu
> Subject: Re: st: Can Spearman's rho be used to measure of the degree of
> association between two binary variables ?
> 
> A classic article in political science that compares a wide variety of
> measures for 2 by 2 tables is:
> 
> Weisberg, Herbert F. 1974. “Models of Statistical Relationship.” The
> American Political Science Review 68(4): 1638–1655.
> 
> --
> -----------------------------------------------------------------
> Richard J. Stoll * Albert Thomas Professor of Political Science *
> Rice University * Political Science MS 24 * P.O. Box 1892 * Houston
> TX 77251-1892 * stoll@rice.edu * 713-348-3362 * FAX: 713-348-5273
> *
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