Definition: Projected old-age dependency ratio
Projected old-age dependency ratio is defined as the number of persons aged 65 and over expressed as a percentage of the number of persons aged between 15 and 64. It should be noted that projections are not forecasts and they are based on assumptions about the future, not on certainties.
Eurostat, "Measuring progress towards a more sustainable Europe. Sustainable development indicators for the European Union. Data 1990-2005", Office for Official Publications of the European Communities, Luxembourg, 2005