Talk Evidence

Talk Evidence covid-19 update - Research on vaccine safety, treatment for dementia

In this week's Talk Evidence, Joe Ross, BMJ editor and professor at Yale again joins Helen Macdonald to talk about emerging evidence on Covid-19. They also welcome to the podcast Juan Franco, family physician in Buenos Aires, and professor at the Instituto Universitario Hospital Italiano, and new editor-in-chief of BMJ Evidence Based Medicine. This week, the team bring you updates on; Post-covid syndrome in individuals admitted to hospital with covid-19 - how are people with long covid faring. Finally published research from Scandinavia on the risk of thrombotic events after administration of the Oxford-AstraZeneca vaccine - how big is the risk, and what does that mean for the overall benefit of that vaccine. How difficult the UK population found it to understand and stick to the rules with our test, trace and isolate system - and some of the questions that this raises for this public health approach. and finally, research that showed non-drug interventions are as good as pharmaceuticals at treating people with depression and dementia - and the holistic effect that alleviating depression can have. Full reading list Ayoubkhani, Daniel, Kamlesh Khunti, Vahé Nafilyan, Thomas Maddox, Ben Humberstone, Ian Diamond, and Amitava Banerjee. 2021. “Post-Covid Syndrome in Individuals Admitted to Hospital with Covid-19: Retrospective Cohort Study.” BMJ 372 (March): n693. https://www.bmj.com/content/372/bmj.n693 Pottegård, Anton, Lars Christian Lund, Øystein Karlstad, Jesper Dahl, Morten Andersen, Jesper Hallas, Øjvind Lidegaard, et al. 2021. “Arterial Events, Venous Thromboembolism, Thrombocytopenia, and Bleeding after Vaccination with Oxford-AstraZeneca ChAdOx1-S in Denmark and Norway: Population Based Cohort Study.” BMJ 373 (May): n1114. https://www.bmj.com/content/373/bmj.n1114 Smith, Louise E., Henry W. W. Potts, Richard Amlôt, Nicola T. Fear, Susan Michie, and G. James Rubin. 2021. “Adherence to the Test, Trace, and Isolate System in the UK: Results from 37 Nationally Representative Surveys.” BMJ 372 (March): n608. https://www.bmj.com/content/372/bmj.n608 Watt, Jennifer A., Zahra Goodarzi, Areti Angeliki Veroniki, Vera Nincic, Paul A. Khan, Marco Ghassemi, Yonda Lai, et al. 2021. “Comparative Efficacy of Interventions for Reducing Symptoms of Depression in People with Dementia: Systematic Review and Network Meta-Analysis.” BMJ 372 (March): n532.

https://www.bmj.com/content/372/bmj.n532

Talk Evidence - children and covid, varients of concern, ivormectin update

The evidence geekery continues, and this week Helen Macdonald and Duncan Jarvies are joined again by Joe Ross, The BMJ's US research editor, and professor of medicine and public health at Yale. This week we update you on treatment - the WHO's guidelines for covid and ivermectin, and why they're not ready to recommend it's use in treatment, and prophylactic anticoagulation treatment. We hear about two papers from the UK and Switzerland which look at children and covid, and we pick up on varients of concern and long covid. Reading list. Association between living with children and outcomes from covid-19: OpenSAFELY cohort study of 12 million adults in England https://www.bmj.com/content/372/bmj.n628 Clustering and longitudinal change in SARS-CoV-2 seroprevalence in school children in the canton of Zurich, Switzerland: prospective cohort study of 55 schools https://www.bmj.com/content/372/bmj.n616 Risk of mortality in patients infected with SARS-CoV-2 variant of concern 202012/1: matched cohort study https://www.bmj.com/content/372/bmj.n579 Early initiation of prophylactic anticoagulation for prevention of coronavirus disease 2019 mortality in patients admitted to hospital in the United States: cohort study https://www.bmj.com/content/372/bmj.n311 Editorial - Prophylactic anticoagulation for patients in hospital with covid-19 https://www.bmj.com/content/372/bmj.n487 Living with Covid19 – Second review - Informative and accessible health and care research

https://evidence.nihr.ac.uk/themedreview/living-with-covid19-second-review/

Talk Evidence - Inside the JCVI, and the key to grading evidence

In a slightly different talk evidence, Helen Macdonald and Duncan Jarvies are bringing you a couple, of in depth interviews, Firstly, Anthony Harnden, GP, academic and member of the UK's Joint Committee on Vaccination and Immunisation takes us inside their decision making, and explains what evidence they look at, how they assess it, and what the next year of vaccination may look like. Also in this episode, Gordon Guyatt, one of the founders of EBM, joins us to talk about Grade - the framework in which evidence for guidelines can be assessed - and explains why the most important thing is not the RCTs, but being very clear about what the guideline is supposed to achieve. https://www.gov.uk/government/groups/joint-committee-on-vaccination-and-immunisation

https://www.gradeworkinggroup.org/

Talk Evidence - re-hospitalistion for covid-19, remote hypertension intervention

The evidence geekery continues, and this week Helen Macdonald and Duncan Jarvies are joined by Joe Ross, The BMJ's US research editor, and professor of medicine and public health at Yale. This week we pick up on a preprint in medRxiv, which has been attracting attention on social media - it tries to look at the longer term effects of covid hospitalisation. Joe explains why he thinks propensity matching can be summarised as "doing your best". Finally, as more and more care moves remotely, we discuss a trial on a digital intervention to help manage poorly controlled hypertension remotely. Reading list: Epidemiology of post-COVID syndrome following hospitalisation with coronavirus: a retrospective cohort study https://www.medrxiv.org/content/10.1101/2021.01.15.21249885v1.full.pdf Home and Online Management and Evaluation of Blood Pressure (HOME BP) using a digital intervention in poorly controlled hypertension: randomised controlled trial

https://www.bmj.com/content/372/bmj.m4858

Talk Evidence - Lateral flow tests update, not the best public health approach

In this episode of Talk Evidence, Jon Deeks, professor of biostatistics at the University of Birmingham, returns to the pod with an update on lateral flow tests - and why the government plan for using them in asymptomatic screening for covid-19 doesn't follow the science. We're also joined by Allyson Pollock, clinical professor of public health at Newcastle University, and author of a recent editorial in The BMJ about asymptomatic transmission of SARS-CoV-2. She explains why she thinks supporting social isolation is the missing piece of our approach to tackling the pandemic. Covid-19 INNOVA testing in schools: don’t just test, evaluate https://blogs.bmj.com/bmj/2021/01/12/covid-19-innova-testing-in-schools-dont-just-test-evaluate/ Asymptomatic transmission of covid-19

https://www.bmj.com/content/371/bmj.m4851

A (non-systematic) evidence review of 2020

As 2021 hoves into view, we look back at a year of extraordinary evidence. Helen Macdonald is joined by Joe Ross, one of The BMJ's research editors, as well as a researcher at Yale.

They discuss the way in which clinical pre-prints have become an important part of the research ecosystem, especially during the pandemic, and pick up on some of the non-coronavirus things you might have missed in the deluge of data.

Talking Christmas evidence - how Christmas research is chosen

If you've had time to digest this year's Christmas edition of The BMJ, you might have wondered how those papers get into The BMJ. Well in this Talk Evidence podcast, Helen Macdonald, UK research editor at The BMJ talks to two of her research team colleagues, John Fletcher and Tim Feeney, as they talk through why they chose their favourite papers. Toxicological analysis of George’s marvellous medicine https://www.bmj.com/content/371/bmj.m4467 Does medicine run in the family—evidence from three generations of physicians in Sweden https://www.bmj.com/content/371/bmj.m4453 The time to act is now

https://www.bmj.com/content/371/bmj.m4143

Talk evidence covid-19 update - poor public messaging, and vaccine approval data

The vaccines are being rolled out - but approval is still on an emergency basis, and the evidence underpinning those decisions is only just becoming available for scrutiny. In this podcast we talk to Baruch Fischhoff, professor at Carnegie Mellon University and expert on public health communication about how that messaging should be done. Peter Doshi, associate editor at The BMJ, and vaccine regulation researcher also joins us to talk about the data now released on the vaccine trials - what questions does it raise, and what are the next steps for researching safety.

For more on The BMJ's covid-19 coverage www.bmj.com/coronavirus