Interviewer instructions
2, Date of birth:
Three writing fields (2-digit) for day, month, year. Please make sure notations are computer-readable.
many legislative provisions and public measures are based upon different age groups (compulsory education, legal age and the like).
The age structure of the population is used as a frame of reference for numerous statistically measured values. Gender and age are the prerequisites for the calculation of life expectancy and for populations projections. The development of the age structure (pupils, employed persons, retired persons) has more meaning than the change of the total population itself in the coming decades.