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Using real-world evidence to evaluate the long-term health and economic impact of the digital tool Grohealth W8Buddy supporting access to specialist weight management services: a protocol for a cohort observational study.

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Title: Using real-world evidence to evaluate the long-term health and economic impact of the digital tool Grohealth W8Buddy supporting access to specialist weight management services: a protocol for a cohort observational study.
Authors: Deo PS; Warwick Medical School, University of Warwick, Coventry, UK., Grove A; University of Birmingham, Birmingham, UK., Zhang M; Warwick Medical School, University of Warwick, Coventry, UK., Abrams KR; Department of Statistics, University of Warwick, Coventry, UK.; Centre for Health Economics, University of York, York, UK., Auguste P; School of Social Policy and Society, University of Birmingham, Birmingham, UK., Barber TM; Warwick Medical School, University of Warwick, Coventry, UK.; University Hospitals Coventry and Warwickshire NHS Trust, Coventry, UK., Gazeley T; University Hospitals Coventry and Warwickshire NHS Trust, Coventry, UK., Green R; University Hospitals Coventry and Warwickshire NHS Trust, Coventry, UK., Griffiths F; Warwick Medical School, University of Warwick, Coventry, UK., Hazlehurst J; University of Birmingham, Birmingham, UK.; Birmingham Health Partners, Birmingham, UK.; Department of Diabetes and Endocrinology, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK., Hee SW; Warwick Medical School, University of Warwick, Coventry, UK.; Research and Development, University Hospitals Coventry and Warwickshire NHS Trust, Coventry, UK., Kaura A; Faculty of medicine, Imperial College London, London, UK., Mallipedhi A; Hywel Dda Health Board, Carmarthen, UK., O'Toole S; University Hospitals Coventry and Warwickshire NHS Trust, Coventry, UK., Panesar A; DDM Health, Coventry, UK., Parsons N; Warwick Medical School, University of Warwick, Coventry, UK., Scott E; Warwick Medical School, University of Warwick, Coventry, UK., Summers C; DDM Health, Coventry, UK., Thind M; University Hospitals Coventry and Warwickshire NHS Trust, Coventry, UK., Thorpe M; Warwick Medical School, University of Warwick, Coventry, UK., Zalin A; Bedfordshire Hospitals NHS Foundation Trust, Luton, UK., Hanson P; Warwick Medical School, University of Warwick, Coventry, UK petra.hanson.1@warwick.ac.uk.; University Hospitals Coventry and Warwickshire NHS Trust, Coventry, UK.; South Warwickshire NHS Foundation Trust, Warwick, UK.
Source: BMJ open [BMJ Open] 2026 Jan 21; Vol. 16 (1), pp. e109111. Date of Electronic Publication: 2026 Jan 21.
Publication Type: Journal Article; Observational Study
Journal Info: Publisher: BMJ Publishing Group Ltd Country of Publication: England NLM ID: 101552874 Publication Model: Electronic Cited Medium: Internet ISSN: 2044-6055 (Electronic) Linking ISSN: 20446055 NLM ISO Abbreviation: BMJ Open Subsets: MEDLINE
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  Data: Using real-world evidence to evaluate the long-term health and economic impact of the digital tool Grohealth W8Buddy supporting access to specialist weight management services: a protocol for a cohort observational study.
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  Data: <searchLink fieldCode="AU" term="%22Deo+PS%22">Deo PS</searchLink>; Warwick Medical School, University of Warwick, Coventry, UK.<br /><searchLink fieldCode="AU" term="%22Grove+A%22">Grove A</searchLink>; University of Birmingham, Birmingham, UK.<br /><searchLink fieldCode="AU" term="%22Zhang+M%22">Zhang M</searchLink>; Warwick Medical School, University of Warwick, Coventry, UK.<br /><searchLink fieldCode="AU" term="%22Abrams+KR%22">Abrams KR</searchLink>; Department of Statistics, University of Warwick, Coventry, UK.; Centre for Health Economics, University of York, York, UK.<br /><searchLink fieldCode="AU" term="%22Auguste+P%22">Auguste P</searchLink>; School of Social Policy and Society, University of Birmingham, Birmingham, UK.<br /><searchLink fieldCode="AU" term="%22Barber+TM%22">Barber TM</searchLink>; Warwick Medical School, University of Warwick, Coventry, UK.; University Hospitals Coventry and Warwickshire NHS Trust, Coventry, UK.<br /><searchLink fieldCode="AU" term="%22Gazeley+T%22">Gazeley T</searchLink>; University Hospitals Coventry and Warwickshire NHS Trust, Coventry, UK.<br /><searchLink fieldCode="AU" term="%22Green+R%22">Green R</searchLink>; University Hospitals Coventry and Warwickshire NHS Trust, Coventry, UK.<br /><searchLink fieldCode="AU" term="%22Griffiths+F%22">Griffiths F</searchLink>; Warwick Medical School, University of Warwick, Coventry, UK.<br /><searchLink fieldCode="AU" term="%22Hazlehurst+J%22">Hazlehurst J</searchLink>; University of Birmingham, Birmingham, UK.; Birmingham Health Partners, Birmingham, UK.; Department of Diabetes and Endocrinology, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK.<br /><searchLink fieldCode="AU" term="%22Hee+SW%22">Hee SW</searchLink>; Warwick Medical School, University of Warwick, Coventry, UK.; Research and Development, University Hospitals Coventry and Warwickshire NHS Trust, Coventry, UK.<br /><searchLink fieldCode="AU" term="%22Kaura+A%22">Kaura A</searchLink>; Faculty of medicine, Imperial College London, London, UK.<br /><searchLink fieldCode="AU" term="%22Mallipedhi+A%22">Mallipedhi A</searchLink>; Hywel Dda Health Board, Carmarthen, UK.<br /><searchLink fieldCode="AU" term="%22O'Toole+S%22">O'Toole S</searchLink>; University Hospitals Coventry and Warwickshire NHS Trust, Coventry, UK.<br /><searchLink fieldCode="AU" term="%22Panesar+A%22">Panesar A</searchLink>; DDM Health, Coventry, UK.<br /><searchLink fieldCode="AU" term="%22Parsons+N%22">Parsons N</searchLink>; Warwick Medical School, University of Warwick, Coventry, UK.<br /><searchLink fieldCode="AU" term="%22Scott+E%22">Scott E</searchLink>; Warwick Medical School, University of Warwick, Coventry, UK.<br /><searchLink fieldCode="AU" term="%22Summers+C%22">Summers C</searchLink>; DDM Health, Coventry, UK.<br /><searchLink fieldCode="AU" term="%22Thind+M%22">Thind M</searchLink>; University Hospitals Coventry and Warwickshire NHS Trust, Coventry, UK.<br /><searchLink fieldCode="AU" term="%22Thorpe+M%22">Thorpe M</searchLink>; Warwick Medical School, University of Warwick, Coventry, UK.<br /><searchLink fieldCode="AU" term="%22Zalin+A%22">Zalin A</searchLink>; Bedfordshire Hospitals NHS Foundation Trust, Luton, UK.<br /><searchLink fieldCode="AU" term="%22Hanson+P%22">Hanson P</searchLink>; Warwick Medical School, University of Warwick, Coventry, UK petra.hanson.1@warwick.ac.uk.; University Hospitals Coventry and Warwickshire NHS Trust, Coventry, UK.; South Warwickshire NHS Foundation Trust, Warwick, UK.
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