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Longitudinal Research

Longitudinal Research

Sometimes we want to see how people change over time, as in studies of human development and lifespan. When we test the same group of individuals repeatedly over an extended period of time, we are conducting longitudinal research. Longitudinal research is a research design in which data-gathering is administered repeatedly over an extended period of time. For example, we may survey a group of individuals about their dietary habits at age 20, retest them a decade later at age 30, and then again...

Life Tables

Life Tables

A life table is a statistical tool that summarizes the mortality and survival patterns of a population, providing detailed insights into the likelihood of survival or death across different age intervals within a cohort. By organizing data on survival probabilities and mortality rates, life tables offer a clear snapshot of population dynamics over time. They are extensively used in demography, public health, actuarial science, and ecology to analyze life expectancy, design health interventions,...

Life Histories

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Constrained by limited energy and resources, organisms must compromise between offspring quantity and parental investment. This trade-off is represented by two primary reproductive strategies; K-strategists produce few offspring but provide substantial parental support, whereas r-strategists produce much progeny that receives little care. These strategies are related to an organism’s survival likelihood across its lifespan, which is represented by a survivorship curve. Three general types of...

Longitudinal Studies

Longitudinal Studies

Longitudinal studies are also widely used in other medical and social science fields. For instance, in cardiovascular research, they can monitor patients' health over decades to identify risk factors for heart disease, such as high cholesterol or smoking, and evaluate the long-term effectiveness of preventive measures. Similarly, in mental health studies, researchers might follow individuals from adolescence into adulthood to understand the development and progression of conditions like...

Actuarial Approach

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The actuarial approach, a statistical method originally developed for life insurance risk assessment, is widely used to calculate survival rates in clinical and population studies. This method accounts for participants lost to follow-up or those who die from causes unrelated to the study, ensuring a more accurate representation of survival probabilities.
Consider the example of a high-risk surgical procedure with significant early-stage mortality. A two-year clinical study is conducted,...

Applications of Life Tables

Applications of Life Tables

Life tables are versatile across various fields, providing a quantitative basis for analyzing mortality and survival rates. Whether used by demographers, actuaries, epidemiologists, or sociologists, life tables offer valuable insights into the dynamics of life and death, facilitating informed decisions in public health, insurance, conservation, and beyond. Their broad applicability highlights the interconnectedness of demographic data with practical outcomes in everyday life and strategic...

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Telomere Length and Telomerase Activity; A Yin and Yang of Cell Senescence

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Published on: May 22, 2013

First names and longevity.

Laura Pinzur¹, Gary Smith

¹Department of Economics, Pomona College, Claremont, CA 91711, USA.

Perceptual and Motor Skills

|May 12, 2009

Summary

This study investigated if unpopular first names affect life expectancy. Analyzing over 6.7 million death records, researchers found no association between name popularity and longevity.

Area of Science:

Social epidemiology
Demography
Public health

Background:

Previous research suggested a link between people's initials and life expectancy.
Studies indicated that individuals with uncommon first names are perceived less favorably in terms of intelligence and likability.

Purpose of the Study:

To determine if social stigmatization associated with unpopular first names impacts life expectancy.
To empirically test the hypothesis that name popularity influences longevity.

Main Methods:

Utilized the California Department of Health Services mortality database (1960-2004).
Analyzed data from 6.7 million white, non-Hispanic decedents.
Compared average age at death between individuals with the most popular and least popular first names.

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Main Results:

The analysis revealed no statistically significant relationship between first name popularity and life expectancy.
The popularity of a given first name did not correlate with the average age at death.

Conclusions:

Social perceptions of name popularity do not appear to affect an individual's lifespan.
The findings do not support the hypothesis that name stigmatization influences life expectancy.