{
  "abstract": "Background The Engaging Adolescents in Changing Behaviour trial tested the impact of an adolescent diet and physical activity intervention involving: teacher training in Healthy Conversation Skills, a health education module (LifeLab) and a gamified smartphone application (‘the app’). The process evaluation described in this paper examined the implementation, context and mechanisms of impact of the intervention (the core elements of the Medical Research Council guidance on process evaluation of complex interventions), to identify how and why participants did or did not engage with each element of the trial and the intervention.Methods A mixed-methods approach was employed. 51 interviews with students, teachers and parents from 11 secondary schools were conducted and analysed using thematic analysis. Quantitative data reported numbers of students who attended LifeLab and downloaded and used the app.Results 87.9% of eligible students attended LifeLab and 45.7% of eligible students downloaded the app. Students (n=72) and teachers (n=16) had positive experiences of LifeLab and the teacher training, despite the pandemic preventing in-person delivery for some schools. Students engaged in a limited way with the app. Parents (n=11) had positive views of the research but little knowledge of the intervention. Students valued learning about their own health, and teachers were enthusiastic about supporting their students’ health but struggled to find opportunities to do so.Conclusions Schools are appropriate settings in which to implement health interventions, but the research must benefit teachers and students. Most students did not engage with the app because they were not presented with it in a way that motivated them to use it. Careful consideration of the design of apps is required to encourage students to use them. Parents should be involved in research in ways that are accessible to them.",
  "authors": [
    {
      "affiliations": [
        "MRC Lifecourse Epidemiology Centre, Southampton, UK",
        "University of Southampton School of Psychology, Southampton, UK",
        "University of Southampton School of Health Sciences, Southampton, UK"
      ],
      "name": "Sarah Jenner, MSc"
    },
    {
      "affiliations": [
        "MRC Lifecourse Epidemiology Centre, Southampton, UK",
        "University of Southampton School of Health Sciences, Southampton, UK",
        "NIHR Southampton Biomedical Research Centre, Southampton, UK"
      ],
      "name": "Mary Barker, PhD"
    },
    {
      "affiliations": [
        "MRC Lifecourse Epidemiology Centre, Southampton, UK",
        "NIHR Southampton Biomedical Research Centre, Southampton, UK"
      ],
      "name": "Sofia Strömmer, PhD"
    },
    {
      "affiliations": [
        "MRC Lifecourse Epidemiology Centre, Southampton, UK",
        "NIHR Southampton Biomedical Research Centre, Southampton, UK"
      ],
      "name": "Sarah Shaw, PhD"
    },
    {
      "affiliations": [
        "MRC Lifecourse Epidemiology Centre, Southampton, UK"
      ],
      "name": "Laila Khawaja, PhD"
    },
    {
      "affiliations": [
        "MRC Lifecourse Epidemiology Centre, Southampton, UK"
      ],
      "name": "Millie Barrett, MSc"
    },
    {
      "affiliations": [
        "NIHR Southampton Biomedical Research Centre, Southampton, UK",
        "University of Southampton School of Healthcare Enterprise and Innovation, Southampton, UK"
      ],
      "name": "Kathryn Woods-Townsend, PhD"
    },
    {
      "affiliations": [
        "University of Southampton School of Healthcare Enterprise and Innovation, Southampton, UK"
      ],
      "name": "Donna Lovelock"
    },
    {
      "affiliations": [
        "University of Southampton School of Healthcare Enterprise and Innovation, Southampton, UK"
      ],
      "name": "Lisa Bagust"
    },
    {
      "affiliations": [
        "MRC Lifecourse Epidemiology Centre, Southampton, UK"
      ],
      "name": "Naomi Leonard, MSc"
    },
    {
      "affiliations": [
        "MRC Lifecourse Epidemiology Centre, Southampton, UK",
        "University of Southampton School of Primary Care Population Science and Medical Education, Southampton, UK"
      ],
      "name": "Wendy Lawrence, PhD"
    },
    {
      "affiliations": [
        "University of Southampton School of Health Sciences, Southampton, UK"
      ],
      "name": "Danielle Lambrick, PhD"
    },
    {
      "affiliations": [
        "University of Southampton School of Primary Care Population Science and Medical Education, Southampton, UK"
      ],
      "name": "Judit Varkonyi-Sepp, CPsychol"
    },
    {
      "affiliations": [
        "School of Science and Engineering, Glasgow Caledonian University, Glasgow, UK"
      ],
      "name": "Hamid Homatash, MProf"
    },
    {
      "affiliations": [
        "MRC Lifecourse Epidemiology Centre, Southampton, UK"
      ],
      "name": "Patricia Coakley"
    },
    {
      "affiliations": [
        "MRC Lifecourse Epidemiology Centre, Southampton, UK",
        "Department of Public Health Primary Care and Food Policy, City St George's, University of London, London, UK"
      ],
      "name": "Christina Vogel, PhD"
    },
    {
      "affiliations": [
        "University of Southampton School of Psychology, Southampton, UK",
        "University of Southampton School of Primary Care Population Science and Medical Education, Southampton, UK"
      ],
      "name": "Leanne Morrison, PhD"
    },
    {
      "affiliations": [
        "MRC Lifecourse Epidemiology Centre, Southampton, UK"
      ],
      "name": "Mary Christina Horsfall"
    },
    {
      "affiliations": [
        "MRC Lifecourse Epidemiology Centre, Southampton, UK"
      ],
      "name": "Hazel Inskip, PhD"
    },
    {
      "affiliations": [
        "MRC Lifecourse Epidemiology Centre, Southampton, UK",
        "NIHR Southampton Biomedical Research Centre, Southampton, UK"
      ],
      "name": "Janis Baird, PhD"
    }
  ],
  "title": "Mixed-methods process evaluation of the EACH-B intervention in UK secondary schools: Delivery fidelity, stakeholder responses and contextual influences",
  "uid": "3a3dc51b-5df5-5ce9-ba39-277d32715cab"
}