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

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: RE: RE: Using command svy glm to obtain risk ratios |

Date |
Tue, 18 Feb 2014 17:28:47 -0500 |

Jose Maria asked: "would it be possible to use *predict pr, pr* instead of *margins*? If there are only a few discrete covariates, then you can graph or table all the predicted probabilities. Otherwise -margins- is preferable, I think, especially when followed -marginsplot-. My own strategy, when the choice is mine, is to fit -svy: logistic-,This will (almost) always converge with no difficulties. Then I look at -marginsplot- of predicted probabilities; I add two-factor interactions and see what happens to the plot For most studies, I prefer to describe effects in terms of linear differences in predicted probabilities, even if the underlying model is -logistic- with no or few interactions. Steve sjsamuels@gmail.com On Feb 18, 2014, at 8:49 AM, jose maria pacheco de souza <jmpsouza@usp.br> wrote: Em 18/02/2014 03:41, Steve Samuels escreveu: > I replied to Jose Maria privately with copies of the do files. The paper > was: > Waltermaurer, E, M Butsashvili, N Avaliani, S Samuels, and LA McNutt. > 2013. An examination of domestic partner violence and its justification > in the Republic of Georgia. BMC Womens Health 13, no. 1: 44. > and is at: > http://www.biomedcentral.com/1472-6874/13/44 > It contained only the -svy: glm- analyses. > > To correct an error: In some instances of -svy: poisson-, the CI for a > predicted *risk*, not the estimated RR, exceeded 1.0. > > log relative risk regression was the choice of my co-authors. My > personal choice would have been -svy: logistic-, followed by -margins- > for interpretation of risks. > > Steve > sjsamuels@gmail.com > Steve was very kind. Thank you. Now, maybe following the thread: for the interpretation of risks after *svy logistic*, would it be possible to use *predict pr, pr* instead of *margins*? josé maria -- Jose Maria Pacheco de Souza Professor Titular (aposentado), Professor Senior Departamento de Epidemiologia/Faculdade de Saude Publica, USP Av. Dr. Arnaldo, 715 01246-904 - S. Paulo/SP - Brasil fone (11)3768-8612 www.fsp.usp.br/~jmpsouza * * 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/

**Follow-Ups**:**Re: st: RE: RE: Using command svy glm to obtain risk ratios***From:*jose maria pacheco de souza <jmpsouza@usp.br>

**References**:**st: RE: Using command svy glm to obtain risk ratios***From:*"Agunwamba, Amenah A., Ph.D." <Agunwamba.Amenah@mayo.edu>

**st: RE: RE: Using command svy glm to obtain risk ratios***From:*"Hussein, Mustafa (Mustafa Hussien)" <mhussei4@uthsc.edu>

**Re: st: RE: RE: Using command svy glm to obtain risk ratios***From:*Steve Samuels <sjsamuels@gmail.com>

**Re: st: RE: RE: Using command svy glm to obtain risk ratios***From:*jose maria pacheco de souza <jmpsouza@usp.br>

**Re: st: RE: RE: Using command svy glm to obtain risk ratios***From:*Steve Samuels <sjsamuels@gmail.com>

**Re: st: RE: RE: Using command svy glm to obtain risk ratios***From:*jose maria pacheco de souza <jmpsouza@usp.br>

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