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International Database on Longevity |
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This PDF is a comprehensive documentation and over This PDF is a comprehensive documentation and overview of the International Database on Longevity (IDL)—the world’s largest, most rigorously validated scientific database dedicated to tracking individuals who have lived to extreme ages (110 years and older). The document explains how the database is built, how ages are scientifically verified, which countries contribute data, and how researchers use these records to study human longevity and mortality at the highest ages.
The core purpose of the IDL is to provide accurate, validated, international data on supercentenarians, allowing demographic researchers, biologists, and statisticians to understand mortality patterns beyond age 110—a topic often full of uncertainty, myth, and unreliable reporting.
🌍 1. What the IDL Is
The International Database on Longevity (IDL) is:
A public research database
Created by leading longevity researchers
Focused exclusively on validated individuals aged 110+
Based on international civil registration systems
Continuously updated as new cases are confirmed
It aims to eliminate false age claims and ensure scientific reliability.
International Database on Longe…
🔍 2. What the Database Contains
The IDL includes:
Individual-level data on supercentenarians
Validated age-at-death
Birth and death dates
Geographic information
Sex and demographic characteristics
Censored individuals (still alive or lost to follow-up)
Documentation on verification processes
Some countries provide exhaustive lists of all persons aged 110+; others provide sampled or partial data.
International Database on Longe…
📝 3. Why Age Validation Is Necessary
Extreme ages are often misreported due to errors such as:
Missing documents
Duplicate identities
Cultural age inflation
Family-based misreporting
Administrative mistakes
The IDL implements strict validation methods:
Cross-checking civil records
Analyzing genealogical information
Ensuring consistency between documents
Verifying unique identity
Only individuals with high-confidence proof of age are included.
International Database on Longe…
🌐 4. Countries Covered
The database includes data from:
France
Germany
United States
United Kingdom
Canada
Switzerland
Sweden
Japan
Denmark
Belgium
Czech Republic (sample)
Others with varying depth of validation
Each country’s rules, data sources, and levels of coverage are described.
International Database on Longe…
📈 5. Scientific Goals of the IDL
The database supports research on:
⭐ A. Mortality at Extreme Ages
Does mortality plateau after age 110?
Is there a maximum human lifespan?
⭐ B. Survival Models
Testing demographic models beyond typical life-table limits.
⭐ C. Longevity Trends Across Countries
Comparing patterns internationally.
⭐ D. Biological and Social Determinants
Sex differences, geographic variation, and historical trends.
⭐ E. Extreme-Age Validation Science
Improving methods for verifying unusually long life spans.
International Database on Longe…
🧪 6. Key Features of the IDL Data
Right-censored data for persons still alive
Left-truncated data for those who entered the risk pool at a known age
Survival records starting at age 110
Consistent formatting across countries
Metadata on each individual
The structure allows researchers to estimate death rates at very high ages without relying on unreliable claims.
International Database on Longe…
🔬 7. Major Scientific Insights Enabled by the IDL
Research using the IDL has contributed to:
Discovery of mortality plateaus beyond age 105–110
Evidence supporting the idea that death rates stop rising exponentially at extreme ages
Better understanding of why women are far more likely to reach 110+
Insights into potential limits vs. non-limits of human longevity
Historical comparisons (e.g., supercentenarians born in 1880–1900 vs. today)
International Database on Longe…
📚 8. Purpose of the Document Itself
This PDF specifically provides:
An overview of the IDL
Explanation of its structure
Details on data sources
Verification standards
Country-specific documentation
Methodological notes on survival and mortality calculations
It serves as the official guide for researchers using the IDL.
International Database on Longe…
⭐ Overall Summary
The PDF provides a clear and detailed explanation of the International Database on Longevity, the world’s most authoritative resource for validated data on individuals aged 110+. It shows how the database is constructed, how age validation works, which countries contribute, and how researchers use the data to study mortality patterns at the extremes of human lifespan. The IDL is essential for answering key scientific questions about longevity, the limits of human life, and demographic change.... |
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