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From |
Steve Samuels <sjsamuels@gmail.com> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: zinb for Zero-inflated negative binomial regression |

Date |
Thu, 3 Oct 2013 19:22:19 -0400 |

Sorry, I'm incorrect about the first point. You can include a variable as predictor and offset. Steve 1. You have the same variable specified as a covariate and offset. 2. The phrase "residuals for some of the linear terms" is meaningless (to me at least). See the -help- on post-estimation for -zinb-, especially the -predict- command. 3. As you don't describe the study design or what "group1" is, I can't answer your question conclusively. The syntax looks correct to me. Have you checked the -help- for "vcetype"? Steve sjsamuels@gmail.com On Oct 3, 2013, at 2:58 PM, Caroline Wilson wrote: Hi everyone, I'm new to using the zinb command in Stata (for a Zero-inflated negative binomial regression) and had a few questions about my code: This is my current code: zinb test var_m var_l var_c, inflate(var_m var_l var_c, offset(var_l)) vce(cluster group1) 1. I'm trying to add an offset variable to the model (var_l). I have added it by including ", offset(var_l)" in the code. However, when I run the model including the offset terms it just runs indefinitely (while it runs fine when I don't include this). Is there something wrong with how I have specified this? 2. I'd like to look at residuals for some of the linear terms in the model. How might I do this with zinb? 3. I'd like to account for clustering of people within group1. Is adding "vce(cluster group1)" the correct way to handle this? Many thanks! Caroline * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/faqs/resources/statalist-faq/ * http://www.ats.ucla.edu/stat/stata/ * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/faqs/resources/statalist-faq/ * http://www.ats.ucla.edu/stat/stata/

**References**:**st: zinb for Zero-inflated negative binomial regression***From:*Caroline Wilson <wilson_cj@hotmail.com>

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