The human condition
A life table graphs the survivorship of a cohort of individuals.
PPT Slide
These data have practical applications
Results of preliminary study at Elmwood Cemetery, 4 September 2002
Results of more extensive data collection, conducted 9-10 Sept. 2002:
Sample sizes:
Change in survivorship curves reflects changes in longevity, at least for males.
Can we draw any conclusions so far about:
The other major factor in the study of demography is the birth rate
The transition from a society with high birth & death rates to low birth & death rates is called the demographic transition.
Sweden represents a MDC, while Mexico represents a LDC. Note that the rate of increase in Mexico far exceeds that of Sweden.
This phenomenon, of LDC’s being “stuck” in stage II of the demographic transition, is resulting in a population explosion in the developing world.
An age-structure diagram shows differences between expanding, stable, and declining populations.
“It has been estimated that saving 5 million children each year from easily preventable communicable diseases would avoid 20 or 30 million extra births.” From Cunningham & Saigo’s Environmental Science.
Email: seisen
Home Page: http://www.cbu.edu/~seisen/
Other information: Review of Demography