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Thank you, Gerta. I will try this.</div>
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Marimuthu</div>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Dr. Gerta Rücker <gerta.ruecker@uniklinik-freiburg.de><br>
<b>Sent:</b> Sunday, June 30, 2024 1:36 PM<br>
<b>To:</b> R Special Interest Group for Meta-Analysis <r-sig-meta-analysis@r-project.org><br>
<b>Cc:</b> Marimuthu S <sm@mcmaster.ca><br>
<b>Subject:</b> AW: Error in the Network plot</font>
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<p class="x_MsoNormal"><span style="font-size:11.0pt; font-family:"Arial",sans-serif">Hi Marimuthu,</span></p>
<p class="x_MsoNormal"><span style="font-size:11.0pt; font-family:"Arial",sans-serif"> </span></p>
<p class="x_MsoNormal"><span style="font-size:11.0pt; font-family:"Arial",sans-serif">It seems you had not yet an answer to this. The problem you encountered comes from mixing code from R packages netmeta and metafor. If you want to use netmeta, particularly
function netconnection(), you have to use pairwise() instead of to.wide() (which is a metafor function).</span></p>
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<p class="x_MsoNormal"><span style="font-size:11.0pt; font-family:"Arial",sans-serif">Attached you find your code adapted for R package netmeta which works fine.</span></p>
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<p class="x_MsoNormal"><span style="font-size:11.0pt; font-family:"Arial",sans-serif">Best,</span></p>
<p class="x_MsoNormal"><span style="font-size:11.0pt; font-family:"Arial",sans-serif">Gerta</span></p>
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<p class="x_MsoNormal"><span style="font-size:11.0pt; font-family:"Arial",sans-serif">UNIVERSITÄTSKLINIKUM FREIBURG</span></p>
<p class="x_MsoNormal"><span style="font-size:11.0pt; font-family:"Arial",sans-serif">Institute for Medical Biometry and Statistics</span></p>
<p class="x_MsoNormal"><span style="font-size:11.0pt; font-family:"Arial",sans-serif"> </span></p>
<p class="x_MsoNormal"><span style="font-size:11.0pt; font-family:"Arial",sans-serif">Dr. Gerta Rücker</span></p>
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<p class="x_MsoNormal"><span style="font-size:11.0pt; font-family:"Arial",sans-serif">Stefan-Meier-Straße 26 · 79104 Freiburg</span></p>
<p class="x_MsoNormal"><span style="font-size:11.0pt; font-family:"Arial",sans-serif">gerta.ruecker@uniklinik-freiburg.de</span></p>
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<p class="x_MsoNormal"><span style="font-size:11.0pt; font-family:"Arial",sans-serif">https://www.uniklinik-freiburg.de/imbi-en/employees.html?imbiuser=ruecker</span><span style="font-size:11.0pt; font-family:"Calibri",sans-serif"></span></p>
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<p class="x_MsoNormal"><b><span style="font-size:11.0pt; font-family:"Calibri",sans-serif">Von:</span></b><span style="font-size:11.0pt; font-family:"Calibri",sans-serif"> Marimuthu S via R-sig-meta-analysis <r-sig-meta-analysis@r-project.org>
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<b>Gesendet:</b> Dienstag, 25. Juni 2024 15:49<br>
<b>An:</b> Marimuthu S via R-sig-meta-analysis <r-sig-meta-analysis@r-project.org><br>
<b>Cc:</b> Marimuthu S <sm@mcmaster.ca><br>
<b>Betreff:</b> [R-meta] Error in the Network plot</span></p>
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<p class="x_MsoNormal"><span style="font-family:"Calibri",sans-serif; color:black">Good Morning everyone,</span></p>
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<p class="x_MsoNormal"><span style="font-family:"Calibri",sans-serif; color:black">I am trying to plot a network graph using 'netconnection' R function. I got the below error message. </span></p>
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<p class="x_MsoNormal"><span style="font-family:"Calibri",sans-serif; color:black">R code and Error:</span></p>
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<p class="x_MsoNormal"><span style="font-family:"Calibri",sans-serif; color:black">library(netmeta)</span></p>
<p class="x_MsoNormal"><span style="font-family:"Calibri",sans-serif; color:black">dat <- dat.hasselblad1998</span></p>
<p class="x_MsoNormal"><span style="font-family:"Calibri",sans-serif; color:black">dat</span></p>
<p class="x_MsoNormal"><span style="font-family:"Calibri",sans-serif; color:black">table(dat$study)</span></p>
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<p class="x_MsoNormal"><span style="font-family:"Calibri",sans-serif; color:black"># restructure to a wide format</span></p>
<p class="x_MsoNormal"><span style="font-family:"Calibri",sans-serif; color:black">dat.wide <- to.wide(dat, study="study", grp="trt", ref="no_contact", grpvars=6:7)</span></p>
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<p class="x_MsoNormal"><span style="font-family:"Calibri",sans-serif; color:black">nc1 <- netconnection(trt.1, trt.2, study, data = dat.wide)</span></p>
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<p class="x_MsoNormal"><span style="font-family:"Calibri",sans-serif; color:black">Error in netconnection.default(trt.1, trt.2, study, data = dat.wide) :</span></p>
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<p class="x_MsoNormal"><span style="font-family:"Calibri",sans-serif; color:black"> The following studies have a wrong number of comparisons: '2', '9'</span></p>
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<p class="x_MsoNormal"><span style="font-family:"Calibri",sans-serif; color:black"> Please provide data for all treatment comparisons (two-arm: 1; three-arm: 3; four-arm: 6, ...).</span></p>
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<p class="x_MsoNormal"><span style="font-family:"Calibri",sans-serif; color:black">I would appreciate it if someone could clarify this and let me know how to sort it out. Please note that studies 2 and 9 have 3 arms.</span></p>
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<p class="x_MsoNormal"><span style="font-family:"Calibri",sans-serif; color:black">Marimuthu</span></p>
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<p class="x_MsoNormal"><span style="font-family:"Calibri",sans-serif; color:black">Warm Regards,</span></p>
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<p class="x_MsoNormal"><b><span style="font-size:14.0pt; font-family:"Calibri",sans-serif; color:#861106">Marimuthu S,</span></b><span style="font-size:14.0pt; font-family:"Calibri",sans-serif; color:#861106"></span></p>
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<p class="x_MsoNormal"><span style="font-family:"Calibri",sans-serif; color:black">Ph.D. Student
<span style="background:white">(Biostatistics)</span> </span></p>
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