About the Authors

Claire L. Chan

Contributed equally to this work with: Claire L. Chan, Saskia Eddy

Roles Formal analysis, Project administration, Writing – original draft, Writing – review & editing

s.eddy@bsms.ac.uk (SE); c.l.chan@qmul.ac.uk (CLC)

Affiliation Centre for Evaluation and Methods, Wolfson Institute of Population Health, Queen Mary University of London, London, United Kingdom

Saskia Eddy

Contributed equally to this work with: Claire L. Chan, Saskia Eddy

Roles Conceptualization, Formal analysis, Project administration, Validation, Writing – original draft, Writing – review & editing

s.eddy@bsms.ac.uk (SE); c.l.chan@qmul.ac.uk (CLC)

Affiliations Centre for Evaluation and Methods, Wolfson Institute of Population Health, Queen Mary University of London, London, United Kingdom, Department of Primary Care and Public Health, Brighton and Sussex Medical School, Brighton, United Kingdom

Jennie Hejdenberg

Roles Conceptualization, Data curation, Writing – review & editing

Affiliation NIHR Coordinating Centre, Twickenham, United Kingdom

Ben Morgan

Roles Conceptualization, Data curation, Writing – review & editing

Affiliation NIHR Coordinating Centre, Twickenham, United Kingdom

Heather M. Morgan

Roles Formal analysis, Validation, Writing – review & editing

Affiliation School of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Foresterhill, Aberdeen, United Kingdom

Gillian Lancaster

Roles Conceptualization, Supervision, Writing – review & editing

Affiliation School of Medicine, Keele University, Keele, United Kingdom

Clare Robinson

Roles Supervision, Writing – review & editing

Affiliation Centre for Evaluation and Methods, Wolfson Institute of Population Health, Queen Mary University of London, London, United Kingdom

Sandra M. Eldridge

Roles Conceptualization, Supervision, Writing – review & editing

Affiliation Bristol Trials Centre, Bristol Medical School, University of Bristol, Bristol, United Kingdom

Competing Interests

I have read the journal’s policy and the authors of this manuscript have the following competing interests: SEd received training from the Medical Research Council - National Institute for Health and Care Research (NIHR) Trials Methodology Research Partnership for her PhD. CC is employed by Queen Mary University of London who received funding from Asthma UK Centre for Applied Research towards this work. JH and BM work in the NIHR Coordinating Centre which manages the Research for Patient Benefit (RfPB) programme, and JH and BM are employed by LGC Ltd. This does not alter our adherence to PLOS ONE policies on sharing data and materials. CR sits on the London Regional Advisory Committee panel for RfPB but was not part of this panel during the applications collection period for the work described in this manuscript.