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13th September 2023

One day online international symposium on "Staged-and-Tailored" Informed Consent for pragmatic trials 

14th- 27th May 2021

Pragmatic Clinical Trials Unit webinar series

1. Introduction to Trials within Cohorts -  Dr Clare Relton - video | slides

2. Hospital based Trials within Cohorts - Professor Helena Verkooijen - videoslides

3. Analysis of Trials within Cohorts - Dr Petter Viksveen - videoslides

4. Ethics of Trials within Cohorts - Dr Clare Relton - videoslides

28th January 2021

Introduction to Trials within Cohorts online webinar - Health Research Board - Trials Methodology Research Network (HRB-TMRN) Ireland


23rd April 2020

Introduction to TwiCs within hospitals and other settings - Pragmatic Clinical Trials Unit, Queen Mary University of London 


23rd May 2019

3rd TwiCs Symposium: Efficiency and Analysis - Wellcome Trust, London


7th March 2017

OSSU Workshop on Pragmatic Trials – Trials within Cohorts (TwiCs/ cmRCT) designs for simple efficient pragmatic trials

Population Health Research Institute (McMaster University), Toronto, Canada


27th January 2017

MRC HTMR Trial Conduct Working Group Webinar – What are TwiCs? And how are they being used? - Clare Relton Slides


7-8th November 2016 

2nd International TwiCs SYMPOSIUM – Ethics of 'Trials within Cohorts' (TwiCs) - Wellcome Trust, London, UK

Presentations and slides and published report


13th July 2016

HSR (Health Services Research) UK SYMPOSIUM – The innovative 'cohort multiple RCT' design: examples from UK research

Relton C, Holding E, Bower P, Barber S and Brown L - Nottingham Conference Centre, UK  - Oral presentation (pdf) and poster presentation (pdf)


16-18th November 2016

3rd international Clinical Trials Methodology Conference – Review of an innovative approach to practical trials: the ‘cohort multiple RCT’ design - Relton C, Thomas K, Nicholl J and Uher R - Glasgow - Poster presentation (pdf)


10-11th November 2014

1st  International 'Trials within Cohorts' (TwiCs) SYMPOSIUM - London School of Hygiene and Tropical Medicine, London

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