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The Stata Journal
Volume 9 Number 2: pp. 291-298



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Implementing Horn's parallel analysis for principal component analysis and factor analysis

Alexis Dinno
Department of Biological Sciences
California State
University–East
Bay
Hayward, CA
adinno@post.harvard.edu
Abstract.  I present paran, an implementation of Horn’s parallel analysis criteria for factor or component retention in common factor analysis or principal component analysis in Stata. The command permits classical parallel analysis and more recent extensions to it for the pca and factor commands. paran provides a needed extension to Stata’s built-in factor- and component-retention criteria.
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