Alongside my clinical work, I am completing a PhD at King's College London and have published research exploring health, behaviour change and addiction. My research focuses on improving quality of life and ensuring healthcare is informed by robust scientific evidence.
I believe research and clinical practice should go hand in hand. By staying actively involved in research, I bring the latest evidence into my work with clients.
Research & Publications
Peer-reviewed publications
Marsden, J., Kelleher, M., Cowden, F., Day, E., Dewhurst, J., Evans, R., ... & Hoare, Z. (2026). Craving and personal functioning as mediators of extended‐release buprenorphine efficacy: A four‐way decomposition analysis from a randomised trial. Addiction.
Lowry, N., McKechnie, A., Day, E., Gilvarry, E., Cowden, F., Evans, R., ... & Marsden, J. (2025). Extended‐release buprenorphine treatment for opioid use disorder: A mixed‐methods study of response and experience. Addiction, 120(10), 2055-2066.
Brobbin, E., Lowry, N., Cella, M., Copello, A., Coulton, S., Di Pietro, J., ... & Deluca, P. (2025). Cocaine cues used in experimental research: A systematic review. Brain Sciences, 15(6), 626.
Lowry, N., Najia, C., Kelleher, M., Mitcheson, L., & Marsden, J. (2024). Patient experience of opioid use disorder treatment medications: a systematic review of contemporary qualitative research. BMJ open, 14(12), e088617.
Conway, R. E., Heuchan, G. N., Heggie, L., Rauber, F., Lowry, N., Hallen, H., & Llewellyn, C. H. (2024). Ultra-processed food intake in toddlerhood and mid-childhood in the UK: cross sectional and longitudinal perspectives. European Journal of Nutrition, 63(8), 3149-3160.
Marsden, J., Kelleher, M., Gilvarry, E., Mitcheson, L., Bisla, J., Cape, A., ... & Hoare, Z. (2023). Superiority and cost-effectiveness of monthly extended-release buprenorphine versus daily standard of care medication: a pragmatic, parallel-group, open-label, multicentre, randomised, controlled, phase 3 trial. EClinicalMedicine, 66.
Scott, G., Turner, S., Lowry, N., Hodge, A., Ashraf, W., McClean, K., ... & Marsden, J. (2023). Patients’ perceptions of self-administered dosing to opioid agonist treatment and other changes during the COVID-19 pandemic: a qualitative study. BMJ open, 13(3), e069857.
Lowry, N., Cowden, F., Day, E., Gilvarry, E., Johnstone, S., Murray, R., ... & Marsden, J. (2022). Experience and response to a randomised controlled trial of extended-release injectable buprenorphine versus sublingual tablet buprenorphine and oral liquid methadone for opioid use disorder: protocol for a mixed-methods evaluation. BMJ open, 12(10), e067194.
Marsden, J., Kelleher, M., Hoare, Z., Hughes, D., Bisla, J., Cape, A., ... & Mitcheson, L. (2022). Extended-release pharmacotherapy for opioid use disorder (EXPO): protocol for an open-label randomised controlled trial of the effectiveness and cost-effectiveness of injectable buprenorphine versus sublingual tablet buprenorphine and oral liquid methadone. Trials, 23(1), 697.
Lowry, N., Marsden, J., Clydesdale, B., Eastwood, B., Havelka, E. M., & Goetz, C. (2021). Acute impact of self‐guided mental imagery on craving in cocaine use disorder: a mixed‐methods analysis of a randomized controlled trial. Addiction, 116(9), 2418-2430.