Abstract 681
Background
Red blood cell distribution width (RDW) is a parameter measured in blood sample tests that reflects the variation in the volume of erythrocytes and used to differentiate an anemic state. The RDW has been used to predict a poor survival in various types of cancer; however, the prognostic impact of the RDW in resected pathological stage I non-small cell lung cancer (NSCLC) patients remains to be elucidated.
Methods
A total of 273 patients with resected pathological stage I NSCLC were included in this study. The cut-off value of RDW was set at 14.5, which was the upper limit of the normal range of the RDW. The controlling nutritional status (CONUT) score, which was calculated by the albumin, cholesterol and the lymphocyte count, was also investigated.
Results
Among 273 patients, 34 (12.5%) were RDW-high, while 239 (87.5%) were RDW-low. RDW-high was significantly associated with a lower body mass index (P < 0.01), a lower level of hemoglobin (P < 0.01), a higher level of C-reactive protein (P < 0.01), and a high CONUT score (P = 0.03) than RDW-low. Patients with RDW-high exhibited significantly shorter recurrence-free and overall survivals (RFS and OS, respectively) than those with RDW-low (P < 0.01 and P < 0.01, respectively). Multivariate analyses showed that the RDW was an independent prognostic factor for both the RFS and OS (RFS, hazard ratio [HR]: 2.16, 95% confidence interval [CI]: 1.14-3.95, P = 0.02; OS, HR: 2.44, 95% CI: 1.28-4.49, P < 0.01).
Conclusions
The RDW was shown to be a potent prognosticator for the RFS and OS in resected pathological stage I NSCLC patients.
Clinical trial identification
Editorial acknowledgement
Legal entity responsible for the study
The authors.
Funding
Has not received any funding.
Disclosure
All authors have declared no conflicts of interest.
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