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Related Experiment Videos

Association between red cell distribution width and erectile dysfunction: A cross-sectional study using NHANES

Shuofeng Li1, Yang Xu1, Zhan Gao2

  • 1Department of Urology, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, China.

Journal of Reproductive Immunology
|May 16, 2025
PubMed
Summary
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Red cell distribution width (RDW) is a promising, non-invasive biomarker for assessing erectile dysfunction (ED). This study found RDW, a marker of systemic inflammation, to be independently associated with ED and highly accurate in its diagnosis.

Area of Science:

  • Urology
  • Cardiovascular Health
  • Inflammation Research

Background:

  • Systemic inflammation is implicated in various health conditions, including erectile dysfunction (ED).
  • Red cell distribution width (RDW) is a readily available, non-invasive biomarker reflecting red blood cell variability and often indicative of systemic inflammation.
  • Previous research suggests a link between inflammatory markers and ED, necessitating further investigation into specific biomarkers.

Purpose of the Study:

  • To investigate the association between Red cell distribution width (RDW) and other inflammation-associated biomarkers with erectile dysfunction (ED).
  • To evaluate the diagnostic accuracy of RDW and other inflammatory markers in identifying ED.
  • To explore the potential of RDW as a cost-effective and accurate biomarker for ED assessment.
Keywords:
Diagnostic performanceEDInflammatory biomarkersNHANESRDW

Related Experiment Videos

Main Methods:

  • Utilized data from 3988 participants in the National Health and Nutrition Examination Survey (NHANES) (2001-2004).
  • Employed multivariable logistic regression, generalized additive models (GAM), and smoothed curve fitting to analyze associations between ED and biomarkers (RDW, MLR, NLR, SIRI, SII, PLR, AISI, CRP).
  • Assessed diagnostic capabilities using Receiver Operating Characteristic (ROC) curve analysis.

Main Results:

  • Significant positive associations were found between ED and RDW, monocyte-to-lymphocyte ratio (MLR), neutrophil-to-lymphocyte ratio (NLR), and systemic inflammatory response index (SIRI), with nonlinear relationships observed.
  • Red cell distribution width (RDW) exhibited the highest diagnostic accuracy for distinguishing ED, with an Area Under the Curve (AUC) of 0.66.
  • RDW demonstrated superior diagnostic performance compared to other evaluated inflammatory biomarkers.

Conclusions:

  • Red cell distribution width (RDW) is independently associated with erectile dysfunction (ED).
  • RDW presents as a cost-effective, non-invasive biomarker with high diagnostic accuracy for ED.
  • RDW shows significant potential as a valuable tool in ED assessment strategies.