JAG lead and support endoscopy research to be undertaken. A number of JAG clinical leads contribute to research and since 2016, JAG have funded a research fellow to lead a number of projects. Key research completed by, or in affiliation with JAG, can be found below:


Valori R, Joint Advisory Group on Gastrointestinal Endoscopy (JAG) achieves enduring large-scale change  Frontline Gastroenterology 2018. 

Siau K, Green J, Hawkes N, Broughton R, Feeney M, Dunkley P, Barton JG, Stebbing J and Thomas-Gibson S Impact of the Joint Advisory Group on Gastrointestinal Endoscopy (JAG) on the endoscopy services in the UK and beyond Frontline Gastroenterology 2018.

Shenbagaraj l, Thomas-Gibson S, Stebbing J, Broughton R, Dron M, Johnston D, Shaw T, Nadim H and Green, J. Endoscopy in 2017: a national survey of practice in the UKFrontline Gastroenterology 2018.

Siau K, Hodson J, Ravindran S, et al. Variability in cecal intubation rate by calculation method: a call for standardization of key performance indicators in endoscopy. Gastrointenstinal Endoscopy 2019.  

Siau K, Dunckley P, Valori R, et al. Changes in scoring of Direct Direct Observation of Procedural Skills (DOPS) forms and the impact on competence assessment 2018. Endoscopy 2018. 

Video comment on Keith Siau et al. Endoscopy 2018. 

Siau K, Kuwai T, Ishaq S. Analysis of learning curves in gastroscopy training: the need for composite measures for defining competence Gut 2018.

Siau K, Hawkes ND, Dunckley P. Training in Endoscopy 2018.

Siau K, Hodson J, Valori RM, et al. Performance Indicators in Colonoscopy after Certification for Independent Practice: Outcomes and Predictors of Competence 2018. 

Siau K, Levi R, Howarth L et al. Validity Evidence for Direct Observation of Procedural Skills in Paediatric Gastroscopy 2018.

Siau K, Murugananthan A, Dunckley P, et al. National Survey of UK endoscopists showing variation in diathermy practice for colonic polypectomy: a JAG perspective. Frontline Gastroenterology 2018.  


Improving Safety and Reducing Error in Endoscopy (ISREE): A JAG initiative 

Review of the Impact of JAG on Endoscopy Services and Training 

Validation of Direct Observation of Procedural Skills (DOPS) for Paediatric Colonoscopy 

Validation of Direct Observation of Procedural Skills (DOPS) for Paediatric OGD

Aligning JETS Sedation Key Performance Indicator Measurements with current UK standards - does this affect trainee outcome? 

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