This dataset presents the latest annual all cause mortality information on population adjusted rates and age-standardised mortality rates (ASMRs) for thirty-eight OECD countries and three OECD accession countries (Bulgaria, Croatia and Romania). For more details, refer to the Methodological notes, Notes and caveats and sources sections in the OECD Health Working Paper No. 163 - Examining recent mortality trends: The impact of demographic change, available at https://doi.org/10.1787/78f69783-en.