With a background in mathematics and statistics, I commenced my career in the Department of Statistics, University of Leeds. I have also worked at the Institute of Psychiatry, London, and the United Medical and Dental Schools (now incorporated into King's College London). 

My research has included: capture-recapture methods in the estimation of population size; multinomial logistic regression in modelling asthma symptoms; proportional hazards regression applied to survival following a stroke; kappa statistics in assessing observer agreement. At King's College London I was principal investigator for a comparative study of stroke in Barbados and South London. My current interests include the role of ethnicity in medical/ social research and the influence of atmospheric pollution and climate on stroke.  

I joined the Centre for Research in Public Health and Community Care as Social Statistician in 2013. Having worked in the areas of adolescent behaviour, epilepsy risk and health inequalities, I am currently part of the UK National Institute for Health and Care Research (NIHR) funded Connect Public Health Interventions Responsive Studies Team (PHIRST) evaluating public health interventions.

• Nonparametric statistical methods

• Role of ethnicity on health behaviour and outcomes

• Influence of atmospheric pollution and climate on stroke

• Modelling observer agreement

• History of statistics 

• Dental statistics (author of Dental Statistics Made Easy, now in its third edition)
• Medical statistics
• Postgraduate teaching (statistics) for health service staff
• Mathematical statistics (author of Applied Nonparametric Statistical Methods, fifth edition forthcoming)