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From |
"Ariel Linden. DrPH" <ariel.linden@gmail.com> |

To |
<statalist@hsphsun2.harvard.edu> |

Subject |
Re: Re: st: binary mediation command |

Date |
Mon, 4 Jul 2011 10:04:16 -0700 |

See the following website for a better understanding of how you use and interpret binary_mediation. http://www.ats.ucla.edu/stat/stata/faq/binary_mediation.htm Ariel Date: Sun, 03 Jul 2011 15:44:09 -0400 From: Pina Valle <gv08d@fsu.edu> Subject: Re: st: binary mediation command Even when using percentile confidence intervals, is this output relevant since I am trying to determine the proportion mediated by the indirect effect? Indirect effects with binary response variable evercoh indir_1 = .00601173 (adrel, binary) total indirect = .00601173 direct effect = .10223182 total effect = .10824356 c_path = .10680445 proportion of total effect mediated = .05553895 ratio of indirect to direct effect = .05880491 Binary models use logit regression Thanks Pina - ----- Original Message ----- From: Philip Ender <ender97@gmail.com> Date: Wednesday, June 15, 2011 4:21 pm Subject: Re: st: binary mediation command To: statalist@hsphsun2.harvard.edu > Pina Valle wrote: > > >I am trying to test mediation with a dichotomous outcome, and I > have looked around and found a command in >STATA called > binary_mediation. However, there isn't really any indication in the > notes I found on whether the >mediation is significant. Here is an > example of my output along with the commands that I have used: > >... > > The documentation for -binary_mediation states: This program does not > provide standard errors or statistical tests for coefficients. > Bootstrap standard errors and confidence intervals are recommended for > this purpose. > > Using either the percentile or bias corrected confidence intervals, > whichever you prefer, intervals that contain zero are not significant > at the stated level while those that do not contain zero are > significant. Traditional statistical tests are likely to lead to > biased p-values. I think the confidence interval approach is safer. > > Phil > -- > Phil Ender > UCLA Statistical Consulting Group * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/

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