NLCHECK: Stata module to check linearity assumption after model estimation
Abstractnlcheck is a simple diagnostic tool that can be used after fitting a model to quickly check the linearity assumption for a given predictor. nlcheck categorizes the predictor into bins, refits the model including dummy variables for the bins, and then performs a joint Wald test for the added parameters. Alternative, nlcheck uses linear splines for the adaptive model. Support for discrete variables is also provided. Optionally, nlcheck also displays a graph of the adjusted linear predictions from the original model and the adaptive model.
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Bibliographic InfoSoftware component provided by Boston College Department of Economics in its series Statistical Software Components with number S456968.
Programming language: Stata
Requires: Stata version 10.0
Date of creation: 15 Oct 2008
Date of revision:
Note: This module should be installed from within Stata by typing "ssc install nlcheck". Windows users should not attempt to download these files with a web browser.
Contact details of provider:
Postal: Boston College, 140 Commonwealth Avenue, Chestnut Hill MA 02467 USA
Web page: http://fmwww.bc.edu/EC/
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