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Gareth Hollands

@gjhollands.bsky.social
3K followers 902 following 179 posts

Behavioural science + evidence synthesis at UCL • population health • interventions • environments • unpopular culture • architecture (& morality) • "fun-sponge boffin" (Daily Star) 🔗 profiles.ucl.ac.uk/92345-gareth-hol… 🌍 London, UK

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Reposted by Gareth Hollands
UCL Social Research Institute @sriucl.bsky.social · 05/05/2026
Explore how LLMs/Gen AI can be used in caring professions with this interactive tool from @eppicentre.bsky.social colleagues eppi.ioe.ac.uk/cms/Default....
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Gareth Hollands @gjhollands.bsky.social · 29/04/2026
🥳 New from us, a systematic review of equity impacts of active travel interventions. Link (£0): 👉 doi.org/10.1136/jech... To inform national policy, we were commissioned to review the evidence for impacts on disadvantaged population groups in the UK. Short 🧵 on findings below 👇 1/4
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EPPI Centre @eppicentre.bsky.social · 01/05/2026
❗If you’re interested in navigating the huge evidence base on the performance of LLM/Gen AI-based tools in health and social care, our living map of this research has been newly updated. This Version 10 now contains 942 fully-coded articles. 👉https://eppi.ioe.ac.uk/cms/Default.aspx?tabid=3938
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Gareth Hollands @gjhollands.bsky.social · 29/04/2026
🥳 New from us, a systematic review of equity impacts of active travel interventions. Link (£0): 👉 doi.org/10.1136/jech... To inform national policy, we were commissioned to review the evidence for impacts on disadvantaged population groups in the UK. Short 🧵 on findings below 👇 1/4
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James Thomas @jm-thomas.bsky.social · 16/03/2026
Guidance for the Responsible use of AI in Evidence Synthesis (RAISE) has been updated! With many thanks to all the feedback we've received and all the contributions from authors Please see OSF for the latest draft: osf.io/fwaud/overview
osf.io
OSF
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Gareth Hollands @gjhollands.bsky.social · 27/02/2026
We've been working for some time now on a living evidence map on the performance of generative #LLMs for healthcare tasks. A Herculean task given a deluge of research of 'variable' quality, led by @eppicentre.bsky.social colleague Ian Shemilt. It's now up to v9: eppi.ioe.ac.uk/cms/Default....
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UCL @ucl.ac.uk · 11/02/2026
Today, UCL turns 200. 🎉 For two centuries, our community has opened doors, challenged convention and pushed the boundaries of knowledge across every discipline. Thank you to everyone who’s been part of the UCL story, here’s to the next century. ✨ #UCL200 #LoveUCL
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The Cochrane Collaboration @cochrane.org · 16/01/2026
Take a look at this webinar introducing EPPI Reviewer and how to use it in the systematic review process. The session will also touch on recently added AI tools! Sign up here ➡️ www.cochrane.org/events/intro... @eppicentre.bsky.social @eppi-reviewer.bsky.social
Introduction to EPPI Reviewer – software for conducting systematic reviews
27 January 2026, 14:00 - 15:00 UTC
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Reposted by Gareth Hollands
Tobias Rüttenauer @ruettenauer.bsky.social · 07/01/2026
🌍🌱 New #CLEAN 2026 Seminar Series ♻️🔥💡 #SocialScience seminar series with leading researchers to discuss topics ranging from #ClimateJustice and #Adaptation policies to #Energy transitions and #Health impacts of extreme heat 🏜️ 📆 #hybrid Get in touch for zoom link www.ucl.ac.uk/ioe/departme...
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UCL News @uclnews.bsky.social · 19/12/2025
A major new research centre, led by Professor Max Parmar @mrcctu.bsky.social @uclpophealthsci.bsky.social, will seek to improve how clinical trials are run, cutting years off the time it takes to bring life-saving treatments to patients. The centre will receive £50m from government over 14 years
ucl.ac.uk
New centre aims to fast-track life-saving treatments
A major new centre, led by UCL researchers, will seek to improve how clinical trials are run, cutting years off the time it takes to bring life-saving treatments to patients.
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Reposted by Gareth Hollands
Zen Faulkes @doctorzen.net · 19/12/2025
I have become a slop collector. 😮‍💨 Dirty job, but someone has to do it. I’m compiling gen A.I. images in academic journals. This is an ongoing project, and version 1 is here: doi.org/10.6084/m9.f... Version 2 in January with at least three 3️⃣ new illustrations. #AcademicChatter
doi.org
Pulled From the Trough: Slop Images in Academic Journals
This project collects images created using generative artificial intelligence (gen AI) that have appeared in academic journals.If you run across examples of gen AI images in journals or books - whethe...
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UCL Social Research Institute @sriucl.bsky.social · 17/12/2025
Today we’re celebrating 10 years of SRI! This afternoon we’ll come together to share reflections on the past 10 years, showcase our strengths in research and education, and look to the future for our Institute 🎉🎈🥳
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Gareth Hollands @gjhollands.bsky.social · 17/12/2025
Senate House looking suitably amazing for Christmas 🎄😍
Senate House, London at Christmas
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Gareth Hollands @gjhollands.bsky.social · 12/12/2025
🗣️ Privileged to have played a small part in this Lancet Commission on improving population health, published today: www.thelancet.com/journals/lan... It focused on three interconnected threats: ⚠️ Non-communicable diseases; ⚠️ Outbreaks of infectious diseases; and ⚠️ Environmental degradation (1/2)
Abstract of the report of the Lancet Commission on improving population health post-COVID-19
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Gareth Hollands @gjhollands.bsky.social · 12/12/2025
🗣️ Privileged to have played a small part in this Lancet Commission on improving population health, published today: www.thelancet.com/journals/lan... It focused on three interconnected threats: ⚠️ Non-communicable diseases; ⚠️ Outbreaks of infectious diseases; and ⚠️ Environmental degradation (1/2)
Abstract of the report of the Lancet Commission on improving population health post-COVID-19
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Journal of Clinical Epidemiology @jclinepi.bsky.social · 10/12/2025
GRADE guidance 44: Strategies to enhance the utilization of randomized and non-randomized studies in evidence syntheses of health interventions - Journal of Clinical Epidemiology www.jclinepi.com/article/S089...
jclinepi.com
GRADE guidance 44: Strategies to enhance the utilization of randomized and non-randomized studies in evidence syntheses of health interventions
Ideally, guideline developers and HTA authors base intervention decisions on randomized controlled trials (RCTs). However, relying solely on RCTs is uncommon, especially for public health intervention...
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Reposted by Gareth Hollands
Journal of Clinical Epidemiology @jclinepi.bsky.social · 26/11/2025
Commentary: The many roles of decision thresholds for primary research, evidence synthesis and health decision-making - Journal of Clinical Epidemiology www.jclinepi.com/article/S089...
jclinepi.com
Commentary: The many roles of decision thresholds for primary research, evidence synthesis and health decision-making
A decision threshold (DT) reflects the point at which a decision or judgment changes, leading to the selection of an action or a commitment for one of several alternatives. Thresholds have always play...
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Reposted by Gareth Hollands
Institute of Alcohol Studies @ias.org.uk · 10/11/2025
📢 New report out now: A Healthier Future: a long-term vision to tackle alcohol harm in the UK. Developed by leading experts, it sets out a blueprint for halving risky drinking, reducing alcohol deaths, and expanding access to treatment. Read now: www.ias.org.uk/report/a-hea...
ias.org.uk
A Healthier Future: A long-term vision to tackle alcohol harm in the UK - Institute of Alcohol Studies
Alcohol harm is a serious and growing concern in the UK, impacting people’s health and wellbeing, the NHS, social services, criminal justice, and our economy. These impacts are felt most by people on ...
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Gareth Hollands @gjhollands.bsky.social · 09/11/2025
Good to see a better alternative to this flag-hanging business round these parts. I ❤️ London
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Gareth Hollands @gjhollands.bsky.social · 07/11/2025
This. First, it suggests reviews = meta-analyses, whereas 'reviews' actually encompasses loads of types, which may or may not involve meta-analysis. Second, it's not about needing fewer of them - we need fewer bad ones and more good ones
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UCL Bartlett Faculty of the Built Environment @thebartlettucl.bsky.social · 06/11/2025
Designing Healthier Places 🏙️ For better or worse, our environments shape us. Interviewed for Portico magazine, hear from academics across BSA, IEDE and DPU. 🔗 magazine.ucl.ac.uk/autumn-2025/port…
Interior of The Bartlett student centre with multiple levels of open-plan seating and staircases, filled with visitors reading and using laptops.
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Melissa Sharp-Crowe, MPH, PhD² @sharpmelk.bsky.social · 04/11/2025
Position statement on artificial intelligence (#AI) use in evidence synthesis across Cochrane, the Campbell Collaboration, JBI and the Collaboration for Environmental Evidence 2025 link.springer.com/article/10.1...
link.springer.com
Position statement on artificial intelligence (AI) use in evidence synthesis across Cochrane, the Campbell Collaboration, JBI and the Collaboration for Environmental Evidence 2025 - Environmental Evid...
1. Evidence synthesists are ultimately responsible for their evidence synthesis, including the decision to use artificial intelligence (AI) and automation, and to ensure adherence to legal and ethical...
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Mark Petticrew @markpetticrew.bsky.social · 03/11/2025
🎬 🍿 Official Film Release! We’re thrilled to announce the public release of Unmasking Influence -now available via the LSHTM Vimeo channel! vimeo.com/1123819285 There is overwhelming evidence that many industries are undermining public health.This documentary makes the issues visible and relatable.
vimeo.com
Unmasking Influence - The Official Trailer
This trailer is for a film called Unmasking Influence. Unmasking influence is about how commercial actors influence policy and public health. Many of the major…
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Reposted by Gareth Hollands
Emma Mitchell @silverpebble2.bsky.social · 31/10/2025
A reminder that the original Hallowe'en jack o' lanterns date back to 18th century Ireland if not earlier, were based on a shady boozy blacksmith called Stingy Jack who cheated the devil & was trapped between 2 worlds, were carved from turnips and looked like this:
A preserved carved turnip jack o'lantern from the 19th century A preserved carved turnip jack o'lantern from the 19th century
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Gareth Hollands @gjhollands.bsky.social · 24/10/2025
NEW in @bmc.springernature.com Medicine - Overview of reviews comparing micro-environmental interventions (e.g. product size, labelling or positioning) for healthier or more sustainable food choices - Led by a great team @oxprimarycare.bsky.social bmcmedicine.biomedcentral.com/articles/10....
Abstract of the article 'Comparing the impact and mechanistic pathways of micro-environmental interventions targeting healthier vs. more environmentally sustainable food options: an overview of reviews'. The article concludes that "There is more evidence for health-focused interventions than sustainability-focused interventions. Size and position interventions seem most promising, but evidence for sustainability is scarce. There is currently no evidence of differential responding to health vs. sustainability interventions, although we were unable to comprehensively assess this. More comparable evidence, and evidence on underlying mechanisms, is needed, prioritising the most effective interventions."
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Gareth Hollands @gjhollands.bsky.social · 24/10/2025
NEW in @bmc.springernature.com Medicine - Overview of reviews comparing micro-environmental interventions (e.g. product size, labelling or positioning) for healthier or more sustainable food choices - Led by a great team @oxprimarycare.bsky.social bmcmedicine.biomedcentral.com/articles/10....
Abstract of the article 'Comparing the impact and mechanistic pathways of micro-environmental interventions targeting healthier vs. more environmentally sustainable food options: an overview of reviews'. The article concludes that "There is more evidence for health-focused interventions than sustainability-focused interventions. Size and position interventions seem most promising, but evidence for sustainability is scarce. There is currently no evidence of differential responding to health vs. sustainability interventions, although we were unable to comprehensively assess this. More comparable evidence, and evidence on underlying mechanisms, is needed, prioritising the most effective interventions."
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Reposted by Gareth Hollands
Kristian Steensen Nielsen @kristiansn89.bsky.social · 24/10/2025
⭐ After quite some time in the making, I’m excited to share our new paper!🌿⭐ We examined people's climate-relevant behaviors (driving, air travel, public transport use, and meat consumption) and their perceptions of how feasible it would be to change them (+ expected wellbeing impacts). 🧵(1/4)
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Obesity Health Alliance @oha-updates.bsky.social · 24/10/2025
🚨 Killer Tactics 2: Business as Usual 🚨 Our latest report with Action on Smoking and Health and Alcohol Health Alliance reveals how powerful industries are undermining public health policy under the current Labour Government. Read the report here ➡️ obesityhealthalliance.org.uk/2025/10/23/k...
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Gareth Hollands @gjhollands.bsky.social · 23/10/2025
One of the best songs of the 1980s (or any decade). RIP Dave Ball youtu.be/y9KgEs3Zksg?...
youtu.be
Soft Cell - Say Hello, Wave Goodbye
YouTube video by SoftCellVEVO
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Reposted by Gareth Hollands
Peter Tennant @pwgtennant.bsky.social · 21/10/2025
DEBATE: "Is AI the future of health and social science?" For those in London on 15 Dec 2025, don't miss this fun in person debate between me and David Bann sponsored by @ncrm.ac.uk! Will the arguments change anyone's mind? 🤔 Sign up to attend IN PERSON: www.eventbrite.co.uk/e/is-ai-the-...
Flyer advertising debate on 15 Dec 2025 at 5:30pm at Punnet Hall, 20 Bedford Way, IOE, London, entitled 'Is AI the future of health and social science?'
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Suzi Gage @soozaphone.bsky.social · 08/10/2025
I mean I know this will never happen, because she's a crank and she's not getting anywhere near power, but this is still a profoundly depressing world view. What are we without the arts, without creativity, without imagination?
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Sung Kim @sungkim.bsky.social · 03/10/2025
I know people are submitting AI-generated papers and some are AI-assisted, but… There were 26,646 new submissions to arXiv in September 2025.
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The Lancet @thelancet.com · 03/10/2025
The world produces enough food, yet billions lack access to healthy & sustainable diets. A new EAT–Lancet report presents a science-based approach to improve health, safeguard our environment & provide for a projected 9.6 billion people by 2050. 🔗 bit.ly/3W7rxlP
Cover of the 2025 EAT–Lancet report, featuring an image of a person scooping up green vegetables in their hands from a large plate. The report quote: “The targets of the EAT–Lancet Commission for healthy people on a healthy planet with just food systems can only be met through concerted global action and unprecedented levels of transformative change.”
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public health guy @publichealthguy1.bsky.social · 25/09/2025
from worst to best versions (off the top of my head)
Hierarchy of Scientific Evidence
Strongest to weakest top to bottom
Meta-analyses & systematic reviews
Randomized controlled trials
Cohort studies
Case-control studies
Cross sectional studies
Animal trials & in vitro studies
Case reports, opinion papers, and letters
same pyramid but at the top is another pyramid that says 25+ scientists signed an opinion papersame pyramid but at the top is mom’s advicea shitpost pyramid with “the other shit” on the bottom and “Thoughtful, well-conducted studies of any design” at the top. probably the best version i’ve seen
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Hannah Forde @hannahforde.bsky.social · 22/09/2025
We're are now accepting applications for an exciting DPhil at the @oxprimarycare.bsky.social, *FUNDED* by the THRIVING Food Futures research hub! The project is about divisive policies, supervised by me, Dr Rachel Pechey @petescarbs.bsky.social @ashakaur.bsky.social lnkd.in/eezGaZZ3 Pls share! ✨
phc.ox.ac.uk
Crowd-pleasers or food fights? Exploring UK public support and objection to divisive policies that aim to reduce the environmental harm caused by the food system
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Gareth Hollands @gjhollands.bsky.social · 19/09/2025
Interesting blog from @kdeloyde.bsky.social @bristoltarg.bsky.social following up their trial from a few years ago of the effect of adding alcohol-free beer options in pubs (onlinelibrary.wiley.com/doi/full/10....). So what's been happening with those pubs and their alcohol-free offerings since?
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EPPI Centre @eppicentre.bsky.social · 18/09/2025
🔊 Exciting research role available if you're interested in applying evidence synthesis to food policy and public health. Part of a @nihr.bsky.social study evaluating supermarket policies restricting the use of price promotions. Closes 8th October. Further details 👇 www.ucl.ac.uk/work-at-ucl/...
ucl.ac.uk
UCL – University College London
UCL is consistently ranked as one of the top ten universities in the world (QS World University Rankings 2010-2022) and is No.2 in the UK for research power (Research Excellence Framework 2021).
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The Sutton Trust @suttontrust.bsky.social · 18/09/2025
🚨 NEW: Britain’s most powerful people are still 5x more likely to have been privately educated than the general population. Our brand-new research reveals that jobs in the media, business, charity, creative and public sectors remain dominated by those from private schools ⤵️🧵
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UCL Social Research Institute @sriucl.bsky.social · 08/09/2025
As part of the celebrations of our 10th anniversary as a UCL Department, we have launched an inaugural lecture series. You can watch the first here and there will be more to come this academic year! www.ucl.ac.uk/ioe/departme...
ucl.ac.uk
SRI Inaugural Lectures
Inaugural lectures hosted by the UCL Social Research Institute.
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Marion Campbell @marionkcampbell.bsky.social · 08/09/2025
I seem to have been discussing pilot and feasibility studies a lot this week. One question often asked is how big should my pilot/feasibility study be? 1/6 #MethodologyMonday #124
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Jack Wilkinson @jdwilko.bsky.social · 05/09/2025
www.medrxiv.org/content/10.1... INSPECT-SR: A tool for assessing trustworthiness of randomised controlled trials.
medrxiv.org
INSPECT-SR: a tool for assessing trustworthiness of randomised controlled trials
The integrity of evidence synthesis is threatened by problematic randomised controlled trials (RCTs). These are RCTs where there are serious concerns about the trustworthiness of the data or findings....
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Journal of Clinical Epidemiology @jclinepi.bsky.social · 04/09/2025
Our updated @jclinepi.bsky.social starters pack! go.bsky.app/DNtLZWo
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Wilhelm Hofmann @wilhelmhofmann.bsky.social · 26/08/2025
🚨 We’re hiring! 🚨 The Social&Environmental Psychology Group @ruhr-uni-bochum.de is recruiting 2 PhDs and 1 Postdoc as part of the ERC-funded SUSCON project on sustainable consumption. Details here: PhDs:👉 jobs.ruhr-uni-bochum.de/jobposting/7... Postdoc:👉 jobs.ruhr-uni-bochum.de/jobposting/e...
jobs.ruhr-uni-bochum.de
Doctoral Researcher (m,f,x)
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Ginny Hendricks @ginsta.bsky.social · 14/08/2025
Very good article and thread about open alternatives to google scholar, which clearly will go away when its founder retires. The @barcelonadori.bsky.social movement is getting a lot if attention and OpenAlex.org a lot of support. The Lens currently looking for new home about.lens.org/expressions-...
openalex.org
OpenAlex
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Hazel Cheeseman @hazelcheeseman.bsky.social · 14/08/2025
Stumbled across a map of tobacco retail licence distribution in England in 1634 (for those wondering, the distribution in 21stC would be a blank map as no licence is needed to sell tobacco until government passes Tobacco and Vapes Bill)
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C20 Society @c20society.bsky.social · 13/08/2025
This September, Dalston’s beloved Hackney Peace Mural celebrates its 40th birthday. Commissioned by the GLC and designed by artist Ray Walker, it’s a key survivor of the Community Art Movement of the 1970s and 80s. Click to back the anniversary party crowdfunder: crowdfunder.co.uk/p/hackney-peac…
Hackney Peace Mural in 1985.
Image Credit: Alan DennyHackney Peace Mural in 2025
Image Credit: Richard Blanshard
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Gareth Hollands @gjhollands.bsky.social · 11/08/2025
I don't understand much of the stats here or probably all of the implications, but I love this! Great work @fbartos.bsky.social and all. I also hope there are no triallists still clinging on to coin-flipping as a means of randomisation...
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Gareth Hollands @gjhollands.bsky.social · 10/08/2025
A true trailblazer in not just children's television in the UK, but television full stop. Richard Marson's biography of her is superb
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Jack Birch @jackmbirch.bsky.social · 08/08/2025
Very happy to see a big paper from my PhD *OUT TODAY* We explored if there were inequalities in the attendance & effectiveness of behavioural weight management interventions in an individual participant data meta-analysis. See the thread for findings 👇 bmjpublichealth.bmj.com/content/3/2/...
bmjpublichealth.bmj.com
Are there inequalities in the attendance at and effectiveness of behavioural weight management interventions for adults in the UK? An individual participant data meta-analysis
Objectives Interventions for obesity that require individual behaviour change, such as behavioural weight management interventions, may contribute to health inequalities. We explored if there was evid...
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The Cochrane Collaboration @cochrane.org · 04/08/2025
We are now on Bluesky! Follow us for: The latest insights from Cochrane reviews 📖 Training and support for researchers 👩🏫 Information on research integrity, innovative methods and our global community 🌏
Four individuals are engaged in conversation near the arched entrance of a building. One person holds The Cochrane handbook. The Cochrane logo appears in the upper left corner
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