Evaluation of the NHS England Low-Calorie Diet implementation pilot: a coproduced mixed-method study.

Background: National Health Service England piloted a low-calorie diet programme, delivered through total diet replacement and behaviour change support via 1 : 1, group or digital delivery, to improve type 2 diabetes in adults with excess weight.

Aim: To coproduce a qualitative and economic evaluation of the National Health Service low-calorie diet pilot, integrated with National Health Service data to provide an enhanced understanding of the long-term cost-effectiveness, implementation, equity and transferability across broad and diverse populations.

Research Questions: What are the theoretical principles, behaviour change components, content and mode of delivery of the programme, and is it delivered with fidelity to National Health Service specifications? What are the service provider, user and National Health Service staff experiences of the programme? Do sociodemographics influence programme access, uptake, compliance and success? What aspects of the service work and what do not work, for whom, in what context and why? Can the programme be improved to enhance patient experience and address inequities? What are the programme delivery costs, and policy implications for wide-spread adoption?

Methods: A mixed-methods study underpinned by a realist-informed approach was delivered across five work packages, involving: semistructured interviews with service users ( = 67), National Health Service staff ( = 55), service providers ( = 9); 13 service provider focus groups; and service user surveys ( = 719).

Evaluating a community-led project for improving fathers' and children's wellbeing in England.

Although under-researched and under-theorized compared to other settings, there is potential for the family setting to be harnessed to support the development of healthy children and societies and to reduce health inequalities. Within this setting, the role of fathers as health facilitators has yet to be fully understood and considered within health promotion. This paper draws on a two year evaluation of a community embedded intervention for fathers and children in an area of multiple deprivation in North West England.