Abstract
Research has been conducted on the relationship between postnatal mortality from pneumonia and age, using data from the USA, Japan, former Czechoslovakia, Italy, Portugal and the UK during the period of 1979-1993. The logarithm of mortality caused by pneumonia fell linearly withe the logarithm of age, during the interval of 1-10 years.
This slope is greater than -1. However, the logarithm of mortality from pneumonia declined with the slope equal to -1.
The mortality from pneumonia is inversely proportional to the age. The risk of death at age of 2 is one half the risk at the of 1, at the age of 3 it is one third of the risk of death at the age 1... etc. up to the age of 10.
We assumed that no subpopulation susceptible to pneumonia exists and the risk of death from pneumonia applies in whole population. Consequently, there was applied another distribution fuction described at this paper.