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<div>It sounds like you want to do the moderated mediation: see Section 3.2 of this paper <a href="http://imai.princeton.edu/research/files/mediationR2.pdf">http://imai.princeton.edu/research/files/mediationR2.pdf</a></div>
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Best,</div>
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Kosuke</div>
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<div>Kosuke Imai Office: Corwin Hall 036<br>
Professor Phone: 609-258-6601<br>
Department of Politics Fax: 609-258-1110<br>
Princeton University Email: <a href="mailto:kimai@Princeton.Edu">kimai@Princeton.Edu</a><br>
Princeton, NJ 08544-1012 <a href="http://imai.princeton.edu/">http://imai.princeton.edu</a><br>
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<div>On Oct 7, 2013, at 9:31 AM, "Schoenfeld, David Alan,Ph.D.,Biostatistics" <<a href="mailto:DSCHOENFELD@partners.org">DSCHOENFELD@partners.org</a>> wrote:</div>
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<div><font size="2"><span style="font-size: 10pt; ">I am doing a mediation meta-analysis and I am trying to use your software.</span></font></div>
<div><font size="2"><span style="font-size: 10pt; "> </span></font></div>
<div><font size="2"><span style="font-size: 10pt; ">The problem is that I have several different studies with somewhat different treatments that all affect the same mediator, and the same outcome but affect them differently. A reasonable model would have to
contain a treatment-study interaction. I can't figure out how to do that with your R package.</span></font></div>
<div><font size="2"><span style="font-size: 10pt; ">I am trying to estimate the Proportion Mediated and associated p-value and confidence intervals,</span></font></div>
<div><font size="2"><span style="font-size: 10pt; "> </span></font></div>
<div><font size="2"><span style="font-size: 10pt; ">I would appreciate any help you would give.</span></font></div>
<div><font size="2"><span style="font-size: 10pt; "> </span></font></div>
<div><font size="2"><span style="font-size: 10pt; ">Thanks</span></font></div>
<div><font size="2"><span style="font-size: 10pt; "> </span></font></div>
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