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From | Maarten buis <maartenbuis@yahoo.co.uk> |
To | stata list <statalist@hsphsun2.harvard.edu> |
Subject | st: update propcnsreg available from SSC |
Date | Thu, 17 Mar 2011 09:49:46 +0000 (GMT) |
Thanks to Kit Baum an update of the -propcnsreg- package is now available from SSC. To update this package either type -ssc install propcnsreg, replace- or -adoupdate-. propcnsreg combines information from several observed variables into a single latent variable and estimates the effect of this latent variable on the depedent variable. These observed variables are so-called causal indicators (Bollen 1984, Bollen and Lennox 1991), that is, the observed indicators influence the latent variable. It forms an alternative to models like factor analysis, which assume that the latent variable influences the observed indicators. An alternative interpretation of this model is that it fits a regression with a proportionality constraint, hence the name of the -propcnsreg- package. This update consists of a new option (-logit-) that extends this model for binary dependent variables, by estimating this model within a logitstic regression. -- Maarten References: Bollen, Kenneth A. 1984. "Multiple Indicators: Internal Consistency or No Necessary Relationship" Quality and Quantity 18(4): 377-385. Bollen, Kenneth A. and Richard Lennox. 1991. "Conventional Wisdom on Measurement: A Structural Equation Perspective" Psychological Bulletin 110(2): 305-314. -------------------------- Maarten L. Buis Institut fuer Soziologie Universitaet Tuebingen Wilhelmstrasse 36 72074 Tuebingen Germany http://www.maartenbuis.nl -------------------------- * * 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/