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Updated: Feb 13, 2026

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Breakfast Habits among Schoolchildren in the City of Uruguaiana, Brazil
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Declining Mortality Inequality within Cities during the Health Transition
Dora L Costa1, Matthew E Kahn2
1UCLA Department of Economics, Los Angeles, CA.
Summary
In the late 19th and early 20th centuries, urban mortality rates varied significantly across neighborhoods. By 1930, public health interventions led to neighborhood mortality convergence in major cities.
Area of Science:
- Urban history
- Public health
- Epidemiology
Background:
- Late 19th/early 20th century US cities faced high infectious disease death rates.
- Significant spatial disparities in mortality existed within major urban centers like New York City and Philadelphia.
Observation:
- Neighborhood mortality rates exhibited considerable variation across urban landscapes.
- A notable trend of neighborhood mortality convergence occurred between 1900 and 1930 in NYC and Philadelphia.
Findings:
- Documented the convergence of neighborhood mortality rates over a 30-year period.
- Analyzed the impact of public health interventions on urban mortality patterns.
Implications:
- Discusses the consequences for neighborhood quality of life dynamics.
- Examines the economic incidence of public health interventions, identifying beneficiaries.
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