NLCHECK: Stata module to check linearity assumption after model estimation
nlcheck 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.
|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: |
Web page: http://fmwww.bc.edu/EC/
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|Order Information:||Web: http://repec.org/docs/ssc.php|
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