Medicine, Nursing and Allied Health Professions

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 Janice Ranson

Janice Ranson

Postdoctoral Research Associate

 College House 


College House, University of Exeter, St Luke's Campus, Heavitree Road, Exeter, EX1 2LU, UK


Janice's research interests include dementia identification strategies and clinical prediction model development. She uses advanced statistical analysis of large population-based cohorts for the development and validation of predictive algorithms for direct clinical and research applications. 

Janice developed the algorithms underlying DECODE, a computerised decision support system designed to improve the accurate identification of dementia in primary care which is currently being trialled in the NHS. She has also applied these modelling techniques to predict Vitamin D deficiency for clinical trial recruitment, and to predict mortality in patients with Prion disease, a particularly aggressive form of dementia. 


  • 2014 MSc Psychological Research Methods, University of Exeter
  • 2012 BSc Psychology, Royal Holloway, University of London


Janice has been working in Prof David Llewellyn's dementia research group since 2013, having completed her MSc and PhD under his supervision. 

Janice has a background in psychological research methods, with a broad range of research experience within the public and health sectors. This includes criminal intelligence research for the Intelligence Directorate of Devon and Cornwall Police Force and conducting cognitive and physical assessments for a large scale frailty intervention trial. Janice also has experience working with vulnerable families and mental health service users in a supportive capacity. 


Research interests



Ranson, J.M., Kuzma, E., Hamilton, W., Muniz-Terrera, G., Langa, K., & Llewellyn, D.J. (2018). Predictors of dementia misclassification when using brief cognitive assessments, Neurology: Clinical Practice. Free full text Altmetric 179


Ranson, J.M., Kuzma, E., Hamilton, W., Lang, I., & Llewellyn, D.J (2018). Case-finding in clinical practice: An appropriate dementia identification strategy? Alzheimer’s and Dementia: Translational Research and Clinical Interventions, 4, (288 – 296). Free full text


Kuzma, E., Soni, M., Littlejohns, T.J., Ranson, J.M., van Schoor, N.M., Deeg, D.J., Comijs, H., Chaves, P.H., Kestenbaum, B.R., Kuller, L.H., Lopez, O.L., Becker, J.T., Langa, K.M., Henley, W.E., Lang, I.A., Ukoumunne, O.C., Llewellyn, D.J. (2015). Vitamin D and memory decline: Two population-based prospective studies. The Journal of Alzheimer’s Disease, 50(4), 1099 - 1108. Free full text


Supervision / Group

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