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From |
Richard Williams <Richard.A.Williams.5@ND.edu> |

To |
statalist@hsphsun2.harvard.edu, statalist@hsphsun2.harvard.edu |

Subject |
Re: st: Calculation of likelihood ratio when using svy |

Date |
Wed, 20 Feb 2008 09:30:49 -0500 |

At 08:44 AM 2/20/2008, Rodriguez, Liliana F wrote:

Hello list,LR tests are not appropriate with survey data because the ML assumption that observations are independent is violated. Instead use Wald tests. For the case of one variable, you can just look at the t value. For more complicated tests, use the -test- command.

I'm building a logistic regression model with data from a survey. Therefore, I'm using the survey function of STATA. When trying to run the Likelihood Ratio to compare the model with and without a Variable (potentially poor predictor), I get a message stating that "lrtest is not appropriate with survey estimation results." What is my alternative command to run the LR test and decide if I should keep or discard this variable?

Thank you,

Liliana R.

For more info, see

http://www.stata.com/support/faqs/stat/lrtest.html

http://www.stata.com/support/faqs/stat/svyml.html

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Richard Williams, Notre Dame Dept of Sociology

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**References**:**st: Calculation of likelihood ratio when using svy***From:*"Rodriguez, Liliana F" <Liliana.F.Rodriguez@uth.tmc.edu>

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