Kellar, Ian

Ian Kellar_1

After graduating with a BA in Social Psychology from the University of Sussex, Ian undertook a D.Phil. entitled “Evaluating Brief Theory-Based Interventions to Promote Health Behaviours”, supervised by Professor Charles Abraham, and funded by an ESRC studentship award. Ian then accepted a post as Research Fellow at the Centre for Health Care Research at the University of Brighton, co-authoring a scoping exercise for the National Co-ordinating Centre for NHS Service Delivery and Organisation R&D, entitled “Concordance, Adherence and Compliance in Medicine Taking” with Professor Rob Horne. Ian subsequently joined the Primary Care Unit at the University of Cambridge in the role of research psychologist, developing behaviour change interventions on a series of randomised controlled trials related to diabetes screening, medication adherence, and self-monitoring & physical activity. Since 2013, Ian has been in post as Lecturer in Health and Social Psychology, in a joint role between the Bradford Institute for Health Research and the Institute for Psychological Sciences at the University of Leeds.

Ian is interested in the gap between intentions and behaviour in relation to health behaviours, such as medication adherence, diet and exercise, and patient safety. His current activities include research on the role of sleep in patient safety events, the effects of online social support on asthma medication adherence, and the potential for mobile sensiing data to account for differential effects of green space on health and well-being.


  • Hardeman W; Lamming L; Kellar I; De Simoni A; Graffy J; Boase S; Sutton S; Farmer A; Kinmonth AL Implementation of a nurse-led behaviour change intervention to support medication taking in type 2 diabetes: beyond hypothesised active ingredients (SAMS Consultation Study). Implementation Science, 9 (70).
  • Demain S; Boger E; Latter S; Hankins M; Kennedy A; Foster C; Jones F; Kellar I (2014) What are the outcomes of self-management that matter to stakeholders? Study protocol for the Self-Management VOICED project. Working Papers in the Health Sciences, 1 (7).
  • Boger E; Jones F; Hankins M; Latter S; Kennedy A; Foster C; Kellar I; Ellis J; Demain S (2014) What are the outcomes of self-management that matter to patients, families, health professionals and service commissioners?. PROSPERO International prospective register of systematic reviews, 2014 .
  • Baxter R; Kellar I; Taylor N; Lawton R (2014) How is the positive deviance approach applied within healthcare organizations? A systematic review of methods used. BMC Health Services Research, 14 , pp. P7-P7.
  • Prestwich A; Kellar I; Parker R; MacRae S; Learmonth M; Sykes B; Taylor N; Castle H (2014) How can self-efficacy be increased? Meta-analysis of dietary interventions. Health Psychology Review, 8 (3), pp. 270-285.
  • Sutton S; Kinmonth A; Hardeman W; Hughes D; Boase S; Prevost AT; Kellar I; Graffy J; Griffin S; Farmer A (2014) Does Electronic Monitoring Influence Adherence to Medication? Randomized Controlled Trial of Measurement Reactivity. Annals of Behavioral Medicine, , pp. 1-7.
  • Prestwich A; Kellar I (2014) How can the impact of implementation intentions as a behaviour change intervention be improved?. Revue Europeene de Psychologie Appliquee, 64 (1), pp. 35-41.
  • Kellar I; Hankins M (2013) Intention stability: Literature and methodological review. Revue Européenne de Psychologie Appliquée/European Review of Applied Psychology, 63 (6), pp. 363-373.
  • Kellar I; Mason D (2013) Social patterning in knowledge following an informed choice invitation for Type 2 diabetes screening. Diabetic Medicine, , pp. n/a-n/a.
  • White AJS; Kellar I; Prevost AT; Kinmonth AL; Sutton S; Canny M; Griffin SJ (2012) Adherence to hypoglycaemic medication among people with type 2 diabetes in primary care. Primary Care Diabetes, 6 (1), pp. 27-33.
  • Farmer A; Hardeman W; Hughes D; Prevost AT; Kim Y; Craven A; Oke J; Boase S; Selwood M; Kellar I; Graffy J; Griffin S; Sutton S; Kinmonth A-L (2012) An explanatory randomised controlled trial of a nurse-led, consultation-based intervention to support patients with adherence to taking glucose lowering medication for type 2 diabetes. BMC Family Practice, 13 .
  • Kellar I; Mann E; Kinmonth AL; Prevost AT; Sutton S; Marteau TM (2011) Can informed choice invitations lead to inequities in intentions to make lifestyle changes among participants in a primary care diabetes screening programme? Evidence from a randomized trial. Public Health, 125 (9), pp. 645-652.
  • Marteau TM; Mann E; Toby Prevost A; Vasconcelos JC; Kellar I; Sanderson S; Parker M; Griffin S; Sutton S; Kinmonth AL (2010) Impact of an informed choice invitation on uptake of screening for diabetes in primary care (DICISION): Randomised trial. BMJ (Online), 340 (7757), pp. 1176-1176.
  • Mann E; Kellar I; Sutton S; Kinmonth AL; Hankins M; Griffin S; Marteau TM (2010) Impact of informed-choice invitations on diabetes screening knowledge, attitude and intentions: An analogue study. BMC Public Health, 10 .
  • Mann E; Prevost AT; Griffin S; Kellar I; Sutton S; Parker M; Sanderson S; Kinmonth AL; Marteau TM (2009) Impact of an informed choice invitation on uptake of screening for diabetes in primary care (DICISION): Trial protocol. BMC Public Health, 9.
  • Kellar I; Sutton S; Griffin S; Prevost T; Kinmonth AL; Marteau T (2008) Development and evaluation of an informed choice invitation for type 2 diabetes screening. PSYCHOLOGY & HEALTH, 23 , pp. 41-41.
  • Kellar I; Sutton S; Griffin S; Prevost AT; Kinmonth AL; Marteau TM (2008) Evaluation of an informed choice invitation for type 2 diabetes screening. Patient Educ Couns, 72 (2), pp. 232-238.
  • Kellar I; Abraham C (2005) Randomized controlled trial of a brief research-based intervention promoting fruit and vegetable consumption. British journal of health psychology, 10 , pp. 543-558.
  • Horne R; Kellar I (2005) Interventions to facilitate adherence. In: Horne R; Weinman J; Barber N; Elliott R; Morgan M; Cribb A; Kellar I eds. Concordance, Adherence, and Compliance in Medicine Taking, London: National Co-ordinating Centre for NHS Service Delivery and Organisation, .
  • Horne R; Weinman J; Barber N; Elliott R; Morgan M; Cribb A; Kellar I (2005) Concordance, Adherence and Compliance in Medicine Taking. London: National Co-ordinating Centre for NHS Service Delivery and Organisation.


  • Eaglesham, J., Kellar, I., Power, E., Turner, R., Jones, S. (2014-2015) Meds Companion. Small Business Research Initiatives Healthcare NHS England competition for development contracts (£100,000)
  • Lawton, R., Kellar, I., Prestwich, Moore, S., Finch, L., Kotze, A. (2014-2015) Pre-operative behaviour change. NIHR CLAHRC YH Research Capability Funding. (£59,159)
  • Lawton, R., Kellar, I., Prestwich, A. (2014-2017) Promoting safety for high risk surgical patients: a pre-operative lifestyle behaviour change intervention (PhD studentship). NIHR CLAHRC for YH. (~£60,000)
  • Kellar, I., Ballas, D., McEachan, R. (2014-2017). Development and evaluation of environmental interventions on green space utilisation to promote health and well-being (White Rose PhD studentship part of WR Studentship network: Pickett et al – Innovative approaches to understanding the wider determinants of health and wellbeing using record linkage and mixed methods to exploit the full potential of population cohorts in Yorkshire & Humber). White Rose Consortium. (~£60,000)
  • Siddiqi, K., Jackson, C., Kellar, I., Thomson, H., Dogar, O. (2014-2015). Adapting a behavioural support intervention for smokeless tobacco cessation in South Asians. MRC Public Health Intervention Development Scheme. (£149,955)
  • Kellar, I., Howell, S., Kotze, A., Lawton, R., McCooe, M. (2014) [PPI in the development of pre-operative behaviour change interventions for high-risk patients to reduce perioperative risk] RDSYH Public Involvement in Grant Applications Funding Award – CALL 17. NIHR Research Design Service – Yorkshire & The Humber. (£450)
  • Lawton, R., Kellar, I., Taylor, N. (2013-2016) Positive Deviance. Health Foundation PhD Awards for Improvement Science. (£161,386)
  • Demain, S.H., Foster, C., Latter, S., Hankins, M., Kennedy, A., Boger, E., Jones, F., Kellar, I. (2013-2015). What self-management outcomes matter most to patients, family care-givers, healthcare professionals and commissioners? Exploring consensus and difference. The Health Foundation. (£238,282)
  • Prestwich, A., Conner, M.T., Kellar, I.J., Lawton, R.J., Gardner, P.H. (2012-2013). Alcohol reviews. NHS Leeds. (£48,622)