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Christel Hellberg

@christelh.bsky.social
544 followers 907 following 111 posts

Interested in systematic reviews and other types of evidence synthesis as well as evidence based research. PhD in medicine. Intresserad av systematiska översikter och annan typ av forskningssammanställningar.

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Reposted by Christel Hellberg
Florian Naudet @floriannaudet.bsky.social · 02/10/2026
🔥 OUR STUDY FEATURED IN NATURE NEWS What if one flawed zombie trial 🧟 helped shape the evidence for treating depression in children? Quote : "Elia Abi-Jaoude, [...] calls the paper a “slam-dunk study”. “I hope it will get wide exposure” he says."
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Julia Koricheva @juliakoricheva.bsky.social · 30/09/2026
I will be teaching a meta-analysis course with Jessica Gurevitch at Tjärnö Marine Laboratory of University of Gothenburg on November 2-6th. The course is intended for PhD students and ECRs. Deadline for applying is October 13th. fubasextern.gu.se/fubasextern/...
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Johan Erlandsson @skolbyrakraten.bsky.social · 30/09/2026
En broderad duk med text:

Inte nog med
att det inte är
fredag, det är inte ens torsdag
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Joar Guterstam @joarguterstam.bsky.social · 28/09/2026
Intervjuades av Läkartidningen om en märklig sak jag var med om i somras, då jag var reviewer åt en artikel som jag snart insåg var rent fusk: studien kunde omöjligt ha genomförts på det sätt som beskrevs i artikeln. lakartidningen.se/nyheter/tank...
lakartidningen.se
Tidskrifters verktyg för att stoppa spridning av fejkade studier begränsade
Beroendeforskaren Joar Guterstam upptäckte »rena falsarier« när han expertgranskade en studie. Så gör de stora tidskrifterna för att försöka motarbeta falska studier från att spridas vidare.
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Jack Wilkinson @jdwilko.bsky.social · 25/09/2026
Next INSPECT-SR online training workshop is November 3rd, 2-4pm GMT/UTC+0. Free, book here: www.trybooking.com/uk/HAMZ
trybooking.com
Introduction to INSPECT-SR Training Workshop November 2026
An introductory 2-hour online workshop will introduce participants to the INSPECT-SR tool for assessing trustworthiness of randomised controlled trial
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Paul Gardner @ppgardne.bsky.social · 10/09/2026
Four of twelve faked systematic reviews received identical replies overnight from TB Emran. MS Mubarak wrote much the same response a month ago - with no update or retraction yet. At this stage I have put more effort in than this papermill crowd.
We have rechecked Figure 1 and accept your findings, including that the included count equals the number of references and that the arithmetic does not follow PRISMA 2020. Figure 1 does not document an executed search. This review was a narrative synthesis presented as a systematic review, which is a methodological misreporting. This review was conducted as a topic-focused narrative synthesis rather than a systematic review. Sources were selected by the authors on relevance to each section; screening was not duplicated, and no protocol was registered. The article does not describe itself that way: it cites Page et al. and presents Figure 1 in PRISMA form with specific counts. That is a misreporting of the methodology, and it is a matter for the published record rather than for this thread. We will write to the publisher requesting a corrigendum for this article that withdraws Figure 1 and its caption, removes the citation to Page et al., and the claim of PRISMA-conformant selection and replaces the search paragraph with an accurate description of the narrative methodology, stating that the selection is not reproducible from a documented search. We will post the outcome here.
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Reposted by Christel Hellberg
Paul Gardner @ppgardne.bsky.social · 15/07/2026
1/8 Systematic reviews and meta-analyses are at the top of the evidence hierarchy. They influence clinical practice, policy and future research. So I was surprised to find a series of 12 reviews with remarkably similar PRISMA literature-search figures.
Evidence pyramid from: https://commons.wikimedia.org/wiki/File:Research_design_and_evidence_-_Capho.svg
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Fanny Nilsson @fnyosv.bsky.social · 27/09/2026
Är den biomedicinska psykiatrin i kris? Fler får diagnoser och mediciner - varför mår vi sämre? Kan verkligen ett av sex barn ha ”fel på hjärnan”? Jag har läst fyra författare som vill avpsykiatrisera oss. www.aftonbladet.se/kultur/a/RjM...
aftonbladet.se
Vad händer om vi skulle skrota NPF-begreppet?
FANNY NILSSON Kanske är det dags att avpsykiatrisera oss
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Mark A. Hanson @hansonmark.bsky.social · 26/09/2026
I'm surprised a community of publishing writers can blame AI for the problems of peer review when those same writers cite our study, "the strain on scientific publishing", which characterizes how this problem existed before AI. bit.ly/StrainQSS It's the incentives structure, not the AI. 1/n
scholarlykitchen.sspnet.org
Ask the Chefs: Peer Review Capacity — Uncomfortable Truths and Overlooked Conversations - The Scholarly Kitchen
For Peer Review Week 2026, we asked the Chefs two questions: What is one uncomfortable truth about peer review that the scholarly publishing community doesn’t talk about enough? And, beyond recruiting...
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Dalmeet Singh Chawla @dalmeet.bsky.social · 17/09/2026
Studies originating from paper mills are being cited in clinical guidelines, policy docs, & patents, according to a new @digital-science.com study. My latest for @retractionwatch.com: retractionwatch.com/2026/09/17/p... @maclomaclee.bsky.social, @jabyrnesci.bsky.social, @mcintold.bsky.social
retractionwatch.com
Paper mill studies get cited by clinical guidelines, policy docs and more, analysis finds
Bank Phrom/Unsplash Studies produced by a suspected paper mill are frequently cited in patents, clinical guidelines and policy documents, according to a new analysis.  The work, posted on arXi…
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The Cochrane Collaboration @cochrane.org · 24/09/2026
INSPECT-SR – a tool for assessing the trustworthiness of randomized controlled trials – has been published today in @bmj.com, giving researchers a structured way to identify problematic studies before they're included in systematic reviews. 🔗 www.cochrane.org/about-us/new... #ResearchIntegrity
“Systematic reviews are only as credible as the studies they include.” — phrased as a Cochrane senior research integrity editor; a magnifying glass rests on stacked papers in the background to emphasize careful scrutiny of research.
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Fruktansvärda fel på regnet @axljka.bsky.social · 23/09/2026
En på jobbet sa "vi kan inte göra om samma misstag igen!" och då väcktes min kämpaglöd, för jag tror vi kan det om vi försöker, det känns inte ens speciellt svårt, men vi klarar det verkligen inte om vi är negativa.
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Fredrik Jutfelt 🐠 @jutfelt.bsky.social · 19/09/2026
A foundational paper on the effects of ocean acidification on fish behaviour is retracted! "neither the publisher nor the editor has confidence in the article, primarily because the data provided during the investigation were not consistent with the observation methods described in the article."
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Christel Hellberg @christelh.bsky.social · 28/04/2026
Hur mycket kostar det att köpa sig ett författarskap i en vetenskaplig artikel (ja det är tyvärr, ett alldeles för vanligt förekommande händelse) Svaret varierar beroende såklart beroende på ämnesområde, varvid ordningen man står etc. Men i detta dataset har man analyserat 18,710 annonser.
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Framework for Open and Reproducible Research Training @forrt.bsky.social · 14/09/2026
Peer review is a gift researchers give to the field, worth >$1B globally in 2020. Imagine if more of that generosity flowed straight back into the scholar-led journals that make research free to read and free to publish. Help build that future, become a diamond reviewer forrt.org/diamond-reviewer
A hexagonal badge with a diamond and the words "diamond reviewer" below it.
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Matt Grainger @drmattg.bsky.social · 09/09/2026
Meta-analysts ask researchers to share reusable data, but are we leading by example? Great work by @shreyadimri.bsky.social, @asanchez-tojar.bsky.social & more. Of 81 meta-analyses, 68% shared data, only 15% shared code, and none reported a risk-of-bias assessment. ecoevorxiv.org/repository/v...
ecoevorxiv.org
Meta-analysts must lead by example and embrace all FAIR principles
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Christel Hellberg @christelh.bsky.social · 07/09/2026
Preparing a presentation on research integrity, I came across some tortured phrases I had to share: Foundation commotion (background noise) Vitality source (energy source) Prospering countries (developing nations) Corruption of polymers (polymer decomposition) Hairlike activity (capillary action)
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Health Nerd @gidmk.bsky.social · 24/06/2026
New study from my fab masters student. There are some people who have so many retractions that they are famous for it. The most notorious frauds in science. Do the unretracted papers from these authors get cited in Cochrane reviews? Yes. link.springer.com/article/10.1...
link.springer.com
Research integrity within systematic reviews: investigating the prevalence of studies by authors with multiple retraction histories in Cochrane reviews - Research Integrity and Peer Review
Background Research misconduct poses a significant threat to the integrity of evidence synthesis. Although Cochrane reviews are known for rigorous methodological standards, the potential inclusion of ...
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Christel Hellberg @christelh.bsky.social · 10/08/2026
PRISMA 2020 is a reporting guideline! How is it possible that so many reviews go through the entire publication and peer-review process without this being corrected? - 55.5% used PRISMA 2020 inadequately - only 20.5% were categorised as ‘adequate’. onlinelibrary.wiley.com/doi/10.1002/...
onlinelibrary.wiley.com
PRISMA 2020 Is a Reporting Guideline for Systematic Reviews but Is Often Misused to Guide Review Content
Introduction The Preferred Reporting Items for Systematic reviews and Meta-Analyses (PRISMA) is a reporting guideline aiming to facilitate transparent and accurate reporting in systematic reviews. T.....
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Sholto David @sholtodavid.bsky.social · 06/08/2026
A tool used to rephrase plagiarised text changed "final solution" to "mass killing of an ethnic group" in a chemistry paper. Now retracted thanks to a PubPeer user who spotted this. pubpeer.com/publications...
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JBI @jbiebhc.bsky.social · 30/07/2026
Data transformation in mixed methods systematic reviews. This presentation was recorded at #JBIiGNITE: ow.ly/OLBx50YaEPg #JBIMethodology
Presentation slide titled 'Data transformation in mixed methods systematic reviews: a starting point' by Dr Cindy Stern, Dr Lucylynn Lizarondo, and Prof Heather Loveday from JBI.
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Reposted by Christel Hellberg
JASP @jaspstats.bsky.social · 20/07/2026
We still have a few spots left for our 2026 version of the hybrid JASP Workshop week end of August featuring a day on Discovering Statistics, a day on State-of-the-art Meta Analyses, a day on Machine learning, and two days on Bayesian hypothesis testing😊 (also single days) jasp-stats.org/workshops/
jasp-stats.org
Workshops - JASP - Free and User-Friendly Statistical Software
The JASP team is excited to support four workshops this year (2026). Each of these workshops can be attended either in person (at the University of Amsterdam) or online: On Monday August 24th, we orga...
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Neal Haddaway @nealhaddaway.bsky.social · 18/07/2026
Planning a systematic review or map? Join my next course 7-8th Sep, 9-16 BST, for intensive, hands-on training in SR/SM methods, covering: formulating a question, protocols, searching, screening, data extraction, critical appraisal, synthesis, and reporting! opencollective.com/esmarconf/ev...
opencollective.com
Systematic Review and Mapping Methods Course - Open Collective
A 2-day online workshop on how to plan and conduct a systematic review or systematic map
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Alfredo Sánchez-Tójar @asanchez-tojar.bsky.social · 16/07/2026
In other disciplines such as medicine, RoB assessment is the standard norm & is extensively used, highlighting a significant gap in ecology & evolution #synthesis To bridge this, we provide a clear roadmap to make RoB Known, Easy, and Possible for the entire community 🏗️ 🔗 doi.org/10.1111/2041...
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Jamie Cummins @jamiecummins.bsky.social · 14/07/2026
Today we launch the first stable release of RegCheck: v1.0.0. RegCheck makes it easier and quicker to compare study registrations to published papers for consistency - something we know is important in principle, but rarely done in practice. A 🧵 on what's new: regcheck.app
regcheck.app
RegCheck
RegCheck is an AI tool to compare preregistrations with papers instantly.
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Christel Hellberg @christelh.bsky.social · 16/07/2026
My experience as well, but very nice too see a thorough examination!
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Anders Emretsson @emretsson.bsky.social · 04/07/2026
Recept:
Bild och recept på drinken The Reflecting Pool: 
2 oz rum
4 oz pineapple juice 
1 oz blue curacao
Blue fruit roll-up
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Reposted by Christel Hellberg
Peter Johnson @libraryvines.bsky.social · 02/07/2026
#medlibs - excellent article on the need for more defined standards on the use and reporting of grey / gray literature www.sciencedirect.com/science/arti...
sciencedirect.com
Guidance to including gray literature in systematic reviews-recommendations from an epidemiological study
Gray literature studies are materials produced outside traditional academic or commercial publishing such as theses, conference proceedings, technical…
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Alfredo Sánchez-Tójar @asanchez-tojar.bsky.social · 01/07/2026
There are still free spots for the 2nd edition of the 5-day course: "Systematic Reviews and Meta-analysis in R", run in collaboration with the @eco-aeet.bsky.social This year we are running the event at beautiful and historic @ucoimbra.bsky.social (Portugal) Info: aeet.org/events/2026/... #rstats
aeet.org
Course Systematic Reviews and Meta-analysis in R, 2ed
This course provides a practical introduction to modern methods of evidence synthesis, with a focus on systematic review and meta-analysis in ecology and evolution.
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Alfredo Sánchez-Tójar @asanchez-tojar.bsky.social · 02/07/2026
Tired of "methods sections" lacking detail? Check out our new preprint: "Ten simple rules for writing a reusable step-by-step protocol" 📢 This is not only for lab work. Detailed protocols are essential for reproducibility across ALL research fields 🔗 osf.io/preprints/me...
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Martin Andersson @martinhist.bsky.social · 30/06/2026
Vi letar ny doktorand i agrarhistoria till ett projekt om hur människor i det förindustriella Sverige fick tillgång till mat – Känner du någon som vill du forska om bröd, öl och gröt i fyra år!? www.slu.se/om-slu/jobba...
slu.se
Doktorand i agrarhistoria | slu.se
Vetenskap och utbildning för hållbart liv.
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Ian Hussey @ianhussey.mmmdata.io · 22/06/2026
Trials that fail INSPECT-SR trustworthiness assessments (inspect.sr) have much larger and implausible effect sizes. Checks are as simple as "is the mean within the scale range". Review included 857 Chinese RCTs, just published in the Lancet Psychiatry: doi.org/10.1016/S221...
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Christel Hellberg @christelh.bsky.social · 28/06/2026
Titta! En valkompass som bygger på vad partierna gjort istället för vad de säger.
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Christel Hellberg @christelh.bsky.social · 27/06/2026
För rolig för att inte dela…
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Erik Forsell @erikforsell.bsky.social · 24/06/2026
Gamla Saltkråkan var före sin tid när Melker blir alldeles tokig av att försöka jobba hemifrån mitt under sommarlovet när alla ungar är hemma. -Jag arbetar! -Du sitter ju bara och skriver på skrivmaskin, det är väl inte att arbeta!?
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Joel Pick @joelpick.bsky.social · 22/06/2026
What is the replication crisis? Is it a problem in Ecology and Evolution? Can journals help us fight it? I'll be answering all these questions and more later this week in a free and open @sortee.bsky.social webinar. Come along to find out more!!
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Christel Hellberg @christelh.bsky.social · 23/06/2026
I’ve worked with systematic reviews for 14+ years, but have only recently moved into agronomy and environmental science. And one thing keeps surprising me… #SystematicReview #SysRev #EvidenceSynthesis
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Andrew D Wilson @adw.bsky.social · 16/06/2026
Retract and resubmit is a bold new option
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Michael J. Kane @michaeljkane.bsky.social · 16/06/2026
I've also found this shinyapp tool to be useful as a reference checker in manuscript reviewing: drkap.shinyapps.io/APA_Cheat_Ca...
drkap.shinyapps.io
APA Reference Validator
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Wolfgang Viechtbauer @wviechtb.bsky.social · 15/06/2026
The third edition of the Open Handbook of Experience Sampling Methodology is out! The book includes 14 chapters that cover all aspects of designing, running, and analyzing the data from an ESM/EMA study. The book is freely available here: www.kuleuven.be/samenwerking...
Cover of the Open Handbook of Experience Sampling Methodology.
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Research on Research Association @roration.bsky.social · 04/06/2026
We're excited to launch J·ROR, the Journal of Research on Research. A new open-access home for research on how research is funded, organised, conducted, communicated, and evaluated. Our first editorial: www.tandfonline.com/doi/full/10.... #ResearchOnResearch #MetaScience #OpenScience #STS
tandfonline.com
Introducing the Journal of Research on Research (J·ROR): aligning constellations and communities
Published in Journal of Research on Research (Vol. 1, No. 1, 2026)
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Daniel Lakens @lakens.bsky.social · 27/05/2026
Excellent news! Nature is expanding Registered Reports to all the fields in which they publish! A great result by all those proposing this strong solution to publication bias and selective reporting (and getting expert feedback before data collection)! www.nature.com/articles/d41...
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Global Research Initiative on Open Science (GRIOS) @grios-openscience.bsky.social · 20/05/2026
📢 From discussion to action: GRIOS has opened its first call for evidence synthesis on key #OpenScience topics. If you have experience in systematic or scoping reviews, this is your moment to contribute. ➡️ www.grios.org/grios-launch... #Metascience #SystematicReviews
grios.org
GRIOS launches open call for evidence synthesis on Open Science
The Global Research Initiative on Open Science (GRIOS), hosted by the European Science Foundation (ESF), is pleased to announce the launch of its first open call for proposals to conduct in-depth evid...
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Christel Hellberg @christelh.bsky.social · 21/05/2026
Why do reaserchers do this type of graphs?
An image with the results overalapping, making it almost impossible to extract.
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Daniel Lakens @lakens.bsky.social · 18/05/2026
A master student, Mink Veltman, is helping us to develop a miscitation detection module for Metacheck. If you want to help us to reduce miscitations, it would be great if you could take 5 minutes to fill out this survey: forms.cloud.microsoft/e/J7ugQw8mic Thanks in advance!
forms.cloud.microsoft
Microsoft Forms
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Kent Lind @camasonian.bsky.social · 15/05/2026
AI is not just "likely to blame" AI is absolutely to blame. Before AI no author ever hallucinated fake citations out of thin air. Authors did "fraud" the old tried and true way. Cite actual legitimate papers that don't actually support the point you are making and hope no one notices.
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Leonid Schneider @forbetterscience.bsky.social · 15/05/2026
Gosh, why? Either there's no need for experiments and AI is indeed more intelligent and creative than a whole team of scientists... Or science papers evolved into bullshit fantasy template crap which AI can easily emulate?
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Nick Wise @nhwise.bsky.social · 14/05/2026
Not just schematics but 'data' too.
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Isobel Hadley-Kamptz @isobelhk.bsky.social · 13/05/2026
Dystopi
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Susanne Sjöstedt @solsjo.bsky.social · 08/05/2026
Det här är vad som blir effekten av faktaresistens. Jag får triggervarna här, för det är jävligt stark tobak. edition.cnn.com/2026/05/08/h...
edition.cnn.com
Babies are bleeding to death as parents reject a vitamin shot given at birth | CNN
Vitamin K shots, which help the blood to clot, are one of three key interventions for newborns, along with an antibiotic eye ointment and the hepatitis B vaccine.
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