We propose a new view of initial nonresponse bias in longitudinal surveys. Under certain conditions, an initial bias may "fade-away" over consecutive waves. This effect is discussed in a Markovian framework. A general contraction theorem for time inhomogeneous Markov chains is presented. The...

This Report analyzes the impacts of population ageing on the Finnish economy and the possibilities to avoid its negative effects by increasing net migration. Our calculations show that a yearly net migration of 44,000 persons is needed to stabilize the size of the birth cohorts and the labor...