Recent trends in infant mortality in developed countries

Area of Science:

• Demography
• Public Health
• Epidemiology

Background:

• Infant mortality rates (IMR) are key indicators of population health and socioeconomic development.
• Post-1960 trends in IMR in developed countries provide insights into public health interventions and societal changes.

Purpose of the Study:

• To analyze the trends and patterns of infant mortality decline in primary developed countries after 1960.
• To compare the pace and characteristics of infant mortality reduction across different developed nations.

Main Methods:

• Comparative analysis of infant mortality data from developed countries from 1960 onwards.
• Examination of the relationship between initial infant mortality levels and the rate of decline.
• Assessment of sex-specific infant mortality trends.

Main Results:

• A substantial decrease in infant mortality was observed globally across developed countries.
• The intensity of the decline was largely independent of the initial infant mortality levels.
• Japan and parts of Europe showed the most rapid declines, while the Soviet Union exhibited the slowest.
• Fluctuations were noted in countries like Romania, Czechoslovakia, and the United States.
• Reduced sex differences in infant mortality were associated with lower overall mortality rates.

Conclusions:

• Developed countries achieved significant progress in reducing infant mortality after 1960.
• The pace of decline varied considerably, influenced by national factors.
• The convergence of sex-specific infant mortality rates occurred in populations with already low overall rates.