[Contribution of older age groups to life expectancy changes in Russian megacities (the case of Moscow and Saint-Petersburg).].

Dynamics of life expectancy at birth (LE0) and at older ages has been analyzed and the contribution of older ages (60+) to the life expectancy changes has been estimated for greatest Russian megacities Moscow and Saint-Petersburg. The contributions of aggregated age groups to differences of LE0 values for Moscow and Saint-Petersburg have been studied. It has been found, in particular, that the increase in life expectancy at older ages makes a significant contribution to the LE0 growth.