Nigel Smeeton is a Social Statistician at the Centre for Research in Public Health and Community Care, University of Hertfordshire. Most of his research has involved the application of statistical methods to psychiatry, asthma, and stroke. He has published an introductory book on dental statistics and is co-author of a text on nonparametric statistical methods. Nigel has an interest in the influence of ethnicity in medical and social issues and is currently engaged in an education intervention for bowel cancer screening in Asian communities. His key areas of expertise include: adolescence; cohort studies; ethnicity; observer agreement; patient and public involvement; statistics; stroke, pollution and climate.