This work is licensed under a Creative Commons Attribution-NonCommercial- NoDerivatives 4.0 International License. This is a postprint version of the following published document: Albarrán, I., Alonso-González, P. J., Arribas-Gil, A. & Grané, A. (2019). How functional data can enhance the estimation of health expectancy: the case of disabled Spanish population. ASTIN Bulletin, 49(1), 57–84. DOI: 10.1017/asb.2018.34 © Astin Bulletin 2018.