Browsing by Author "Preston, Sumuel H."
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Item Causes and consequences of mortality declines in less developed countries during the twentieth century(2022) Preston, Sumuel H.Only a few countries of Africa , Asia and Latin America can supply suitable data for estimating mortality levels in 1900. Many more can sully such data for 1940 or 1950. Without exception the estimated levels of mortality prevailing in those years are higher than current levels, for those countries that can provide data at both earlier points most improvement as indexed by life expectancy at birth has been achieved since 1940. It appears from fragmentary records that life expectancy at birth during 1935-39 was about 30 years in Africa and Asia and 40 years in Latin America. The respective levels in 1965-70 were on the oder of 43,50 and 60 (World health organization 1974; United Nations population division 1973)