Katerina Papadimitropoulou
@KPapadimitroStatistician | Researcher in Evidence Synthesis Methods
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New paper on a shiny app ✨(onlinelibrary.wiley.com/doi/epdf/10.10…) Meet MA-cont: pre/post effect size (katerina-pap.shinyapps.io/MA-cont-prepos…), an R-shiny app to perform meta-analysis of continuous data measured in pretest/posttest designs. Developed together with my PhD supervisors and @Richard_D_Riley .
Discussion on the progress of network meta analysis, continuing controversies and future in the journal "Research Synthesis Methods" linkedin.com/embed/feed/upd…
📢The fourth edition of the Advanced Survival Analysis course coming up this summer. Learn state-of-the-art techniques from international experts in Leiden (the Netherlands), 🗓️ 26-30 August 2024! See tinyurl.com/asaleiden2024. Only a limited number of places left!
Do you know what standardised mean differences are, when they should be used, and how to correctly compute and interpret them in meta-analysis? No worries, read our new open hands-on tutorial in @cochranemthds Paper with interactive content: onlinelibrary.wiley.com/doi/10.1002/ce…
Fresh from the press ! Our empirical study on ~700 NMAs revealed that the transitivity assumption and its evaluation remain elusive to most NMA users. To complement existing guidance, we propose a set of criteria to report and evaluate transitivity and thus gauge NMA feasibility
📢 Our latest article, "Low awareness of the transitivity assumption in complex networks of interventions: a systematic survey from 721 network meta‑analyses," is now out! 🎉 Read the full article here bmcmedicine.biomedcentral.com/articles/10.11… #SystematicReviews #TransitivityAssumption #PRISMANMA
📽️NEW VIDEO 📽️ "How to get your article rejected by the BMJ: 12 common statistical issues" I discuss common stats issues we encounter at @bmj_latest Please check before you submit next article 🫣 Santa would check the list twice 🎅 Hope helpful 🙏 youtube.com/watch?v=iu4VsE…
Great to chat to @9NewsSyd about our two cord clamping studies published in @TheLancet today! Check out the full manuscripts here: thelancet.com/journals/lance… thelancet.com/journals/lance… #icomp #neotwitter
There's new hope for premature babies and their families. Two studies by the University of Sydney have found that delaying clamping the umbilical cord by "two minutes" could reduce the risk of death in premature babies by more than half. #9News
Just published: "Two‐stage or not two‐stage? That is the question for IPD meta‐analysis projects" - some claims pro 1-stage approach are misleading - 2-stage will often suffice unless data sparse - here we provide guidance for a broad audience onlinelibrary.wiley.com/doi/10.1002/jr…
Excited to see this guidance with brilliant co-authors being published :) An often debated topic where no method is a panacea, and context matters🤓
*NEW PAPER* "Two-stage or not two-stage? That is the question for IPD meta-analysis projects" onlinelibrary.wiley.com/doi/10.1002/jr… The best approach is often debated, so here we provide clearer guidance for a broad audience with @joie_ensor @MiriamHattle @KPapadimitro @tmorris_mrc
Excited to be part of this work, providing a neat extension to the FP models in NMA while properly accounting for observed and censored data in survival outcomes 🤓 'Learning' about the censoring mechanism could be a valuable insight for designing future trials
A manuscript that offers a useful extension of the modelling framework of fractional polynomials on network meta-analysis with time-to-event data allowing the joint synthesis of observed and censored time-to-event data along with its inherent limitations. journals.sagepub.com/doi/10.1177/26…
*** Open for booking *** "Statistical Methods for Meta-Analysis of Individual Participant Data" 3-day course, practicals in Stata or R 1-stage & 2-stage models for examining treatment effects, effect modifiers, test accuracy, prediction models & more ipdma.co.uk/training-cours…
📢NEW PAPER "Calculating the power of a planned individual participant data meta-analysis of randomised trials to examine a treatment-covariate interaction with a time-to-event outcome" with @GSCollins @joie_ensor @MiriamHattle @R_L_Whittle open access: onlinelibrary.wiley.com/doi/10.1002/jr…
SYMPOSIUM on the latest in meta-analysis at @uniGoettingen from 23 - 24 AUG 2023, including sessions on R packages. International group of speakers including @sdias_stats and @wviechtb More information s.gwdg.de/rDkybA . Supported by @dfg_public @yourUMG @TU_Dortmund
Wonderful new paper on serious problems with standard confidence interval for a probability. Why are we still using it as opposed to the Wilson interval (or better: Bayes) tandfonline.com/doi/full/10.10…
Looking forward to ESMARConf2023! Just registered :) Join me! opencollective.com/esmarconf2023-… via @opencollect
Various statistical and machine learning methods can be used to predict individualized treatment effects - this work with @oremiou et al. will be useful in evaluating the performance of competing models. Colossal privilege to be involved! #StatisticsInMedicine
New World View article out in Nature, where I argue for methodological review of research proposals before data collection. nature.com/articles/d4158…
Places still available for our online IPD meta-analysis course in February 👇 Course can be done live, but videos (eg lectures, recorded Q&A sessions) available for 2 weeks afterwards - gives flexibility to those working part time, in other time zones, with childcare duties, etc
Open for booking: "Statistical Methods for Meta-Analysis of Individual Participant Data" 3-day online course: 7th to 9th February 2023 With myself, @blevis_epi & @LucindaAArcher Choose between R or Stata - details: ipdma.co.uk/training-cours… - booking: shop.bham.ac.uk/conferences-an…
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