Published online by Cambridge University Press: 31 July 2008
The patterns of growth of various components in the populations of selected cohorts in Australia are compared with the corresponding information for selected calendar years. The use of three-dimensional diagrams demonstrates essential differences between the age structures for cohorts and those for the entire population and shows the way in which the two can be related.
This study indicates that tracing of persons through their lifetimes in this way can lead to a greater understanding of trends in calendar year populations, as well as providing a closer link between the historical viewpoint and statistical analysis. This approach is of particular importance in Australia where the pattern and timing of demographic events have produced interesting differences between trends in cohort age structures and calendar year populations.