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Predictive Mortality Index for Community-Dwelling Elderly Koreans.

Nan H Kim1, Hyun J Cho, Soriul Kim

  • 1From the Department of Internal Medicine, Division of Endocrinology and Metabolism, College of Medicine, Korea University, Seoul (NHK, HJC, JHS, HJL, JHY, HSC, HJY, JAS, SGK, SHB, DSC, KMC); Division of Epidemiology and Health Index, Center for Genome Science, Korea National Institute of Health, Korea Center for Disease Control and Prevention, Cheongju (SK); Department of Internal Medicine, Division of Pulmonary and Critical Care Medicine, College of Medicine, Korea University, Seoul, Korea (CS).

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Summary

This study developed a 10-year mortality risk score for elderly Koreans using clinical data. The new index helps predict long-term survival in older adults, aiding personalized healthcare.

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Area of Science:

  • Gerontology
  • Epidemiology
  • Biostatistics

Background:

  • Predictive indexes for long-term mortality in community-dwelling elderly Asians are scarce.
  • The elderly Asian population is rapidly increasing, necessitating better prognostic tools.

Purpose of the Study:

  • To develop and validate a 10-year mortality predictive index for community-dwelling elderly Korean men and women.
  • To utilize routinely collected clinical data for creating a practical prognostic tool.

Main Methods:

  • Prospective cohort study design using the southwest Seoul Study (development) and Korean Genome Epidemiology Study (validation).
  • Cox proportional regression model applied to identify nine risk factors: age, sex, smoking, diabetes, systolic blood pressure, triglyceride, total cholesterol, white blood cell count, and hemoglobin.
  • A point scoring system was created based on weighted risk factors.

Main Results:

  • Nine significant risk factors for 10-year mortality were identified.
  • The developed point scoring system showed good predictive performance with C-statistics of 0.73 (development) and 0.67 (validation).
  • Increasing scores correlated with significantly higher 10-year mortality risks in both cohorts.

Conclusions:

  • The study successfully developed and validated a 10-year mortality predictive index for elderly Koreans.
  • This index offers valuable prognostic information and can guide individualized care strategies in an aging society.
  • The findings support the use of routinely collected clinical data for predicting long-term outcomes in older adults.