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Related Concept Videos

Longitudinal Research02:20

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...
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Conservation of declining population focuses on ways of detecting, diagnosing, and halting a population decline. The approach uses methods to prevent populations from going extinct.
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Replicative cell senescence is a property of cells that allows them to divide a finite number of times throughout the organism's lifespan while preventing excessive proliferation. Replicative senescence is associated with the gradual loss of the telomere — short, repetitive DNA sequences found at the end of the chromosomes. Telomeres are bound by a group of proteins to form a protective cap on the ends of chromosomes. Embryonic stem cells express telomerase — an enzyme that adds the telomeric...
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Replicative cell senescence is a property of cells that allows them to divide a finite number of times throughout the organism's lifespan while preventing excessive proliferation. Replicative senescence is associated with the gradual loss of the telomere — short, repetitive DNA sequences found at the end of the chromosomes. Telomeres are bound by a group of proteins to form a protective cap on the ends of chromosomes. Embryonic stem cells express telomerase — an enzyme that adds the telomeric...
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Several body functions deteriorate with age. The external signs of aging are easily identifiable. For example, the skin becomes dry, less elastic, and thins out, forming wrinkles. The skin of the face begins to appear looser due to a decrease in the levels of elastic and collagen fibers in the connective tissue. Additionally, melanin production in the hair follicle decreases with age, resulting in gray hair. Moreover, the senses of sight and hearing decline, so glasses and hearing aids may...
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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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Measurement of Lifespan in Drosophila melanogaster
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RETRACTED ARTICLE: Declining Life Expectancy in the U.S.

Jacquelyn H Flaskerud1

  • 1School of Nursing, University of California, Los Angeles, California, USA.

Issues in Mental Health Nursing
|March 27, 2023
PubMed
Summary
This summary is machine-generated.

This article on US life expectancy has been retracted due to significant overlap with existing publications without proper citation. The journal maintains scholarly record but marks content as retracted.

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Area of Science:

  • Public Health
  • Health Policy
  • Nursing Research

Background:

  • Life expectancy in the United States has been a subject of concern and research.
  • Previous studies have explored various factors influencing US life expectancy trends.
  • Ensuring proper attribution and originality in scholarly publications is critical.

Purpose of the Study:

  • To analyze and present data on declining life expectancy in the U.S.
  • To contribute to the discourse on factors affecting longevity in the United States.

Main Methods:

  • The article's methodology involved analyzing existing data and literature on US life expectancy.
  • A review of trends and contributing factors was conducted.

Main Results:

  • Significant concerns were raised regarding substantial overlap with previously published works.
  • The author acknowledged the overlap and lack of appropriate citations and quotations.

Conclusions:

  • The article has been retracted by the Editors and Publisher of Issues in Mental Health Nursing.
  • The retraction is due to a breach of editorial policies regarding plagiarism and citation.
  • The article remains accessible online but is watermarked as 'Retracted' to preserve the scholarly record.