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Charlson comorbidity score is a strong predictor of mortality in hemodialysis patients

Manoch Rattanasompattikul1, Usama Feroze, Miklos Z Molnar

  • 1Harold Simmons Center for Chronic Disease Research and Epidemiology, Los Angeles Biomedical Research Institute at Harbor-UCLA Medical Center, 1124 West Carson Street, C1-Annex, Torrance, CA 90502, USA.

International Urology and Nephrology
|December 3, 2011
PubMed

Insights

The modified Charlson Comorbidity Index (CCI), excluding age, effectively predicts mortality in hemodialysis patients. This modified index offers a robust tool for assessing patient risk and improving outcomes in this population.

Area of Science:

  • Nephrology
  • Epidemiology
  • Biostatistics

Background:

  • The Charlson Comorbidity Index (CCI) is widely used for morbidity assessment.
  • Its utility in predicting mortality among hemodialysis patients remains unclear.
  • Age, a key component of CCI, is a known risk factor for mortality in chronic diseases.

Purpose of the Study:

  • To investigate the predictive value of the Charlson Comorbidity Index (CCI) without age for mortality in hemodialysis patients.
  • To test the hypothesis that a modified CCI (mCCI) is a strong predictor of mortality.
  • To assess the association between mCCI and mortality in a hemodialysis cohort.

Main Methods:

  • A 6-year prospective cohort study involving 893 hemodialysis patients.
  • A modified CCI (mCCI) was calculated, excluding age and kidney disease.
  • Statistical analysis included adjustment for case-mix, nutritional, and inflammatory markers.

Main Results:

  • Higher quartiles of mCCI were significantly associated with increased mortality risk.
  • Each one-unit increase in mCCI score correlated with a 1.16 hazard ratio for death.
  • The association between mCCI and mortality was robust, particularly in non-African American patients.

Conclusions:

  • The modified Charlson Comorbidity Index (CCI), independent of age, is a reliable and linear predictor of mortality in hemodialysis patients.
  • This finding is especially relevant for non-African American individuals undergoing hemodialysis.
  • The mCCI offers a valuable tool for risk stratification in hemodialysis populations.
Abstract

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