[Mediation-information] question about R mediation package

[Kosuke Imai]

I'm ccing my colleague, Kentaro, who should be able to answer this
question.

Kosuke Imai
Professor, Department of Politics
Center for Statistics and Machine Learning
Princeton University
http://imai.princeton.edu

On Wed, Mar 9, 2016 at 8:16 PM, Wei, Yongyue <ywei at hsph.harvard.edu> wrote:

> Hi Kosuke,
>
>
>
> Sorry to trouble you! I am a user of R mediation package. Now I have one
> question about how to use under the following situation of two survreg
> models.
>
>
>
> model.m = survreg(Surv(pfs, progress)~group, data=ds)
>
> model.y = survreg(Surv(os, death)~group+progress, data=ds)
>
>
>
> med = mediate(model.m, model.y, treat="group", mediator="progress",
>
>         outcome="death", bootstrap=TRUE, sims = 1000)
>
>
>
>
>
> My question is:
>
> 1)      In the outcome model (model.y), which name should I use for
> mediator? ‘progress’? or ‘pfs’?
>
> 2)      In mediate model, which should I use for outcome? Should be
> ‘death’, right?
>
>
>
>
>
> Thank you!
>
>
>
>
>
>
>
> Best,
>
>
>
>
>
> Yongyue
>
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