The Australian mortality decline: all-cause mortality 1788-1990

Area of Science:

• Demography
• Public Health
• Historical Epidemiology

Background:

• Historical mortality patterns in Australia (1788-1990) were characterized by infectious disease epidemics until the late 19th century.
• Significant declines in all-cause mortality began around 1880, with notable decreases in infant and maternal mortality observed in the 20th century.
• Australian mortality trends are compared with those in Europe and North America to understand demographic shifts and public health interventions.

Purpose of the Study:

• To review and analyze the long-term trends in all-cause mortality in Australia from 1788 to 1990.
• To compare Australian mortality declines with those observed in European and North American countries.
• To identify key factors and periods influencing mortality changes, including infectious diseases, medical advancements, and socio-economic conditions.

Main Methods:

• Review of historical mortality data for Australia, Europe, and North America spanning over two centuries.
• Analysis of specific mortality rates, including all-cause, infant, and maternal mortality.
• Identification of periods of 'crisis mortality' and accelerated declines, correlating them with historical events and interventions.

Main Results:

• Mortality declined significantly from 1880, with a precipitous fall in infant mortality from 1900 and maternal mortality from 1937.
• Accelerated declines in infant mortality occurred in the 1940s (antibiotics) and early 1970s; maternal mortality fell with the introduction of sulphonamides.
• Australian mortality patterns post-1970 show similarity to North America and Europe, with potential advantages earlier due to lower industrialization and better nutrition; Australia experienced no war-related mortality interruptions.

Conclusions:

• Australia's mortality decline broadly mirrors that of the UK and European countries, with potential earlier advantages attributed to socio-environmental factors.
• Medical innovations like antibiotics and sulphonamides played a crucial role in reducing infant and maternal mortality, respectively.
• Post-1970, Australian mortality trends converged with those of other developed nations, indicating successful public health strategies and narrowing sex differentials.