Dr Colwyn M Jones has notified the BDJ of a correction to his paper "The relationship between water fluoridation and socio-economic deprivation on tooth decay in 5-year-old children"in Vol 186 pp397–400. Reference 24 should read: Townsend P, Phillimore P, and Beattie A. Health Deprivation: Inequality and the North. London: Croom Helm, 1988.