Hout, Ardo van den; Jagger, Carol; Matthews, Fiona E. - In: Journal of the Royal Statistical Society Series C 58 (2009) 4, pp. 449-465
Population studies with longitudinal follow-up and mortality information can be used to estimate transitions between healthy and unhealthy states before death. When health is defined with respect to cognitive ability during old age, the trajectory of performance is either static or downwards....