My main area of research concerns statistical methods for the analysis of longitudinal data, in particular structural equation models, multilevel models, survival models and causal inference methods and methods for dealing with missing data. I am a co-investigator of the English Longitudinal Study of Ageing (https://www.elsa-project.ac.uk). 

My research focuses on healthy life expectancy, work and retirement, trajectories of physical health and well-being at older ages. I also use data from the Health Survey for England, Understanding Society, The 1946 Cohort Study, Whitehall II Study, the Health and Retirement Study in US, the Survey of Health, Ageing and Retirement in Europe, SLOSH, the Finnish Public Sector Study and GAZEL. 

I am also a co-investigator of the Gateway to Global Ageing Data a platform for harmonised population survey data from around the world (https://g2aging.org). 

I am a member of the Integrated Datasets in Europe for Ageing Research (IDEAR) network which brings together leading occupational cohorts and ageing studies from five European countries to explore the impact of working conditions on health and well-being in later life. http://www.idear-net.net