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Common methods of biological age estimation.

Linpei Jia1,2,3, Weiguang Zhang2,3, Xiangmei Chen1,2,3

  • 1Department of Nephrology, Second Hospital of Jilin University, Changchun, Jilin Province.

Clinical Interventions in Aging
|May 27, 2017
PubMed
Summary
This summary is machine-generated.

Biological age (BA) estimation offers a more accurate measure of aging than chronological age (CA). This review systematically compares four common BA methods: MLR, PCA, Hochschild, and KDM.

Keywords:
aging biomarkerchronological agestatistical methodstatistical model

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Area of Science:

  • Gerontology
  • Biostatistics
  • Biomarkers of aging

Background:

  • Chronological age (CA) is a limited indicator of the aging process.
  • Biological age (BA) estimation using biomarkers and mathematical modeling is a proposed alternative.
  • Existing BA estimation methods have not been systematically compared.

Purpose of the Study:

  • To systematically review and compare four common biological age estimation methods.
  • To illustrate the statistical steps involved in BA model construction.
  • To discuss the fundamental differences between MLR, PCA, Hochschild's, and KDM methods.

Main Methods:

  • Review of existing literature on biological age estimation.
  • Illustration of statistical procedures for BA model development.
  • Comparative analysis of four distinct BA estimation methodologies (MLR, PCA, Hochschild, KDM).

Main Results:

  • The four common methods differ in their treatment of chronological age (CA) and biomarker selection criteria.
  • MLR and PCA use CA as a selection criterion and independent index.
  • Hochschild's method and KDM treat CA as an independent variable.

Conclusions:

  • A systematic comparison of common biological age estimation methods is lacking.
  • Understanding the differences between BA estimation methods is crucial for clinical applications.
  • This review provides a comprehensive comparison to guide future research and application of biological age.