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Process evaluation of APPLE-Tree (active prevention in people at risk of dementia through lifestyle behaviour change and technology to build resilience): dementia prevention study focused on health and lifestyle changes
Elenyd M Whitfield, Claudia Cooper, Harriet Demnitz‐King, Sedigheh Zabihi, Julie Barber, Mariam Olaide Adeleke, Rachel M. Morse, A Karim Ahmed et al.. BJPsych Open, 2025-11-01
Topic: Risk, prevention and care in population studies
A total of 346 of 374 (92.5%) intervention arm participants received some intervention (reach), and 305 of 374 (81.6%) attended ≥5 main sessions (predefined as adhering: dose). According to facilitator records, participants met a mean of 5.1 of 7.5 (68.3%) goals set. We generated three themes around (a) building capability and motivation, (b) connecting with other participants and facilitators and (c) flexibility and a tailored approach. The intervention supported behaviour change, through increasing knowledge and providing space to plan, implement and evaluate new strategies and make social connections. Feedback indicated that the intervention was flexible and inclusive of diverse preferences and needs.
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APA 7th
Whitfield, E. M., Cooper, C., Demnitz‐King, H., Zabihi, S., Barber, J., Adeleke, M. O., et al. (2025). Process evaluation of APPLE-Tree (active prevention in people at risk of dementia through lifestyle behaviour change and technology to build resilience): dementia prevention study focused on health and lifestyle changes. BJPsych Open. https://doi.org/10.1192/bjo.2025.10874
Vancouver
Whitfield EM, Cooper C, Demnitz‐King H, Zabihi S, Barber J, Adeleke MO, et al. Process evaluation of APPLE-Tree (active prevention in people at risk of dementia through lifestyle behaviour change and technology to build resilience): dementia prevention study focused on health and lifestyle changes. BJPsych Open. 2025. doi:10.1192/bjo.2025.10874. PMID: 41267582.
BibTeX
@article{whitfield2025-41267582,
author = {Whitfield, Elenyd M and Cooper, Claudia and Demnitz‐King, Harriet and Zabihi, Sedigheh and Barber, Julie and Adeleke, Mariam Olaide and Morse, Rachel M. and Ahmed, A Karim and others},
title = {{Process evaluation of APPLE-Tree (active prevention in people at risk of dementia through lifestyle behaviour change and technology to build resilience): dementia prevention study focused on health and lifestyle changes}},
journal = {BJPsych Open},
year = {2025},
doi = {10.1192/bjo.2025.10874},
pmid = {41267582},
url = {https://doi.org/10.1192/bjo.2025.10874}
}
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Key findings
- A total of 346 of 374 (92.5%) intervention arm participants received some intervention (reach), and 305 of 374 (81.6%) attended ≥5 main sessions (predefined as adhering: dose).
- According to facilitator records, participants met a mean of 5.1 of 7.5 (68.3%) goals set.
- We generated three themes around (a) building capability and motivation, (b) connecting with other participants and facilitators and (c) flexibility and a tailored approach.
- The intervention supported behaviour change, through increasing knowledge and providing space to plan, implement and evaluate new strategies and make social connections.
- Feedback indicated that the intervention was flexible and inclusive of diverse preferences and needs.
Why it matters
This process evaluation of the APPLE-Tree dementia prevention study describes how many participants took part and what they thought of the lifestyle behaviour change programme, finding it supported behaviour change and was flexible and inclusive. It reports on delivery and participant experience, not on whether the programme reduced dementia risk.
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Study details
- Study designrandomized controlled trial
- Participants346
- Effect size92.5%; 81.6%; 68.3%
- Evidence strengthHigh
How this study scored 60/100
Published in a peer-reviewed journal, and it is a randomised controlled trial.
| Component | Points | Why |
|---|---|---|
| Journal tier | 7 / 10 | Tier 3 — peer-reviewed journal (BJPsych Open) |
| Journal's citation record | 1 / 4 | BJPsych Open: journal h-index 75 (OpenAlex, 2026-10-29) |
| Study design | 11 / 12 | A randomised controlled trial |
| Strength of evidence | 5 / 5 | Rated “high” in our summary |
| Peer-review validation | 10 / 10 | Peer-reviewed. Published as an article in a named peer-reviewed journal. |
| How recent | 4 / 5 | 2025 — within 3 year(s) of the newest study here |
| Sample size | 2 / 4 | 346 participants |
| Effect reported | 2 / 3 | Effect reported as a number, without an interval or test |
| Studied in people | 3 / 3 | Studied in people (participant count stated) |
| Randomised / blinded | 1 / 2 | Randomised (as stated in the record) |
| Times cited | 1 / 7 | Cited 2 times (OpenAlex, 2026-10-10) |
| Citations per year | 0 / 5 | 0.7 citations a year over 3 year(s) since 2025 |
| Impact for its field and year | 2 / 6 | Cited 2.4× the average for papers of its field and year (OpenAlex FWCI) |
| Cited by studies here | 1 / 6 | Cited by 1 other studies in this library |
| Still being cited | 0 / 4 | Cited 2 times in 2024–2026 (2026 still in progress; OpenAlex) |
| Senior author's track record | 2 / 4 | Last-listed author Sarah Morgan‐Trimmer: h-index 20 (OpenAlex, whole career) |
| Institution's track record | 2 / 3 | University College London: institution h-index 2,029 (OpenAlex) |
| Multi-centre collaboration | 2 / 3 | OpenAlex lists 4 institution(s) in 2 countries |
| Indexed in PubMed | 2 / 2 | Indexed in PubMed (PMID 41267582) |
| Free to read | 2 / 2 | Free to read |
| Total | 60 / 100 | — |
What each of these 20 components measures, and what this score is not →
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