1. It is largely this lag that initiates demographic transition but other factors undoubtedly complicate the picture.

2. 16 It is largely this lag that initiates demographic transition but other factors undoubtedly complicate the picture.

3. The natural growth rate of the population is currently negative with the demographic transition completed in the 1970s.

4. The effects of the demographic transition on population age structures can therefore be divided into three distinct stages

5. The Oxford Institute of Population Ageing, however, concluded that population ageing has slowed considerably in Europe and will have the greatest future impact in Asia, especially as Asia is in stage five (very low birth rate and low death rate) of the demographic transition model.