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NHS diabetes prevention programme in England : formative evaluation of the programme in early phase implementation.

Penn, Linda and Rodrigues, Angela and Haste, Anna and Marques, Marta M. and Budig, Kirsten and Sainsbury, Kirby and Bell, Ruth and Araújo-Soares, Vera and White, Martin and Summerbell, Carolyn and Goyder, Elizabeth and Brennan, Alan and Adamson, Ashley J. and Sniehotta, Falko F. (2018) 'NHS diabetes prevention programme in England : formative evaluation of the programme in early phase implementation.', BMJ open., 8 (2). e019467.

Abstract

Objectives: Evaluation of the demonstrator phase and first wave roll-out of the National Health Service (NHS) Diabetes Prevention Programme (DPP) in England. To examine: (1) intervention design, provision and fidelity assessment procedures; (2) risk assessment and recruitment pathways and (3) data collection for monitoring and evaluation. To provide recommendations informing decision makers on programme quality, improvements and future evaluation. Design: We reviewed programme documents, mapping against the NHS DPP specification and National Institute for Health and Care Excellence (NICE) public health guideline: Type 2 diabetes (T2D) prevention in people at high risk (PH38), conducted qualitative research using individual interviews and focus group discussions with stakeholders and examined recruitment, fidelity and data collection procedures. Setting: Seven NHS DPP demonstrator sites and, subsequently, 27 first wave areas across England. Interventions: Intensive behavioural intervention with weight loss, diet and physical activity goals. The national programme specifies at least 13 sessions over 9 months, delivered face to face to groups of 15–20 adults with non-diabetic hyperglycaemia, mainly recruited from primary care and NHS Health Checks. Participants: Participants for qualitative research were purposively sampled to provide a spread of stakeholder experience. Documents for review were provided via the NHS DPP Management Group. Findings: The NHS DPP specification reflected current evidence with a clear framework for service provision. Providers, with national capacity to deliver, supplied intervention plans compliant with this framework. Stakeholders highlighted limitations in fidelity assessment and recruitment and retention challenges, especially in reach and equity, that could adversely impact on implementation. Risk assessment for first wave eligibility differed from NICE guidance. Conclusions: The NHS DPP provides an evidence-based behavioural intervention for prevention of T2D in adults at high risk, with capacity to deliver nationally. Framework specification allows for balance between consistency and contextual variation in intervention delivery, with session details devolved to providers. Limitations in fidelity assurance, data collection procedures and recruitment issues could adversely impact on intervention effectiveness and restrict evaluation.

Item Type:Article
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Status:Peer-reviewed
Publisher Web site:https://doi.org/10.1136/bmjopen-2017-019467
Publisher statement:This is an Open Access article distributed in accordance with the terms of the Creative Commons Attribution (CC BY 4.0) license, which permits others to distribute, remix, adapt and build upon this work, for commercial use, provided the original work is properly cited. See: http://creativecommons.org/ licenses/by/4.0/ © Article author(s) (or their employer(s) unless otherwise stated in the text of the article) 2018. All rights reserved. No commercial use is permitted unless otherwise expressly granted.
Date accepted:13 November 2017
Date deposited:28 June 2018
Date of first online publication:21 February 2018
Date first made open access:28 June 2018

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